Database Develop

[CM7] Boot loop issue - Noticed more people now seeing this issue

I noticed more people are having same issue as me and I wanted to create a thread to find the solution.
I was running CM7 RC4 / OC 40311 - It was running fine and one day system hung and so I rebooted and that was it.
Symptom :
System boots and pass the "Touch the future Reading" and displays "ANDROID _" on the bottom of the screen and after 10-15 sec it reboots and loop this process.
Things I tried so far :
CWR 3.0.0.5
- Repratition to stock nook.
- Getting error when I try to format system and data - I thought it was because CM7 was setting system to ext4.
- ADB and DD boot.img, System.img and copy Factory to mmcblk0p3
- Try to restore from back up I made
- Nothing works but goes back to boot loop
CWR 3.0.0.6 - One I got from CM7 install to emmc thread
- System format works
- Install latest nightly
- Restore from back up
- ADB can't find device - This is odd and couldn't find a way to fix it yet.
- Tried to install Stock zip but going back to CM7 boot loop
CWR 3.0.1.0
- Can't format data/system
- ADB to delete partitions and create them again but it doesn't help
- Tried all zip files to bring it back to stock - no go
- ADB to copy Factory.zip to emmc partition - umount and mount again then file I copied is gone.
- Deleted partitions and reboot but some how I got back to CM7 loop
If you are having same issue please post and share your experiences so we can find the solution!!!

tuxhacker said:
Symptom :
System boots and pass the "Touch the future Reading" and displays "ANDROID _" on the bottom of the screen and after 10-15 sec it reboots and loop this process.
Click to expand...
Click to collapse
This means the kernel is loading, and most likely the init.encore.rc is running as well. Have you tried grabbing a log from adb logcat? Or perhaps checking if the shell works?
tuxhacker said:
Things I tried so far :
CWR 3.0.0.5
- Repratition to stock nook.
Click to expand...
Click to collapse
How are you repartitioning?
tuxhacker said:
- Getting error when I try to format system and data - I thought it was because CM7 was setting system to ext4.
Click to expand...
Click to collapse
What is the error?
tuxhacker said:
CWR 3.0.1.0
- Can't format data/system
Click to expand...
Click to collapse
Again- if its getting an error, what is that error? Have you tried formatting manually?
tuxhacker said:
- ADB to delete partitions and create them again but it doesn't help
Click to expand...
Click to collapse
Errors? Logs?
You have to be more specific.

- I was flashing "repartition-boot-with-stock.zip" also tried to delete the partitions using fdisk - from adb shell
- And I was getting "Error formatting / system!" and "Error formatting /Data!" from CWR format system and format data
I also tried to format it manually using "mke2fs /dev/block/mmcblk0p1,2 and 3..."
And could you please tell me how to get the log?
Thank you.

have you tried booting off an cwr 3.0.1.0 bootable sd card and formatting reinstalling?

john10101 said:
have you tried booting off an cwr 3.0.1.0 bootable sd card and formatting reinstalling?
Click to expand...
Click to collapse
Yes I have. I tried several times. It seems like my nook is a read only device now. It won't take any changes.

tuxhacker said:
Yes I have. I tried several times. It seems like my nook is a read only device now. It won't take any changes.
Click to expand...
Click to collapse
unpossible!

chisleu said:
unpossible!
Click to expand...
Click to collapse
Here's one example. I did this from CWR 3.0.1.0.
- Mount mmcblk0p3 to emmc
- Copied factory.zip to emmc
- ls -l /emmc to check the new file
- umount /emmc
- Mount /emmc again
- ls -l as you can see old file date again.
Code:
~ # mount -w /dev/block/mmcblk0p3 /emmc
mount -w /dev/block/mmcblk0p3 /emmc
~ # mount
mount
/dev/block/mmcblk0p3 on /emmc type ext2 (rw,errors=continue)
~ # exit
C:\Program Files\Android\android-sdk\platform-tools>adb push factory.zip /emmc
3779 KB/s (168335604 bytes in 43.492s)
C:\Program Files\Android\android-sdk\platform-tools>adb shell
~ # ls -l /emmc
ls -l /emmc
-rw-rw-rw- 1 root root 168335604 Apr 17 04:06 factory.zip
drwx------ 2 root root 12288 Oct 23 05:27 lost+found
-rw-rw-rw- 1 root root 2567 Nov 17 22:27 rombackup.zip
~ # umount /emmc
umount /emmc
~ # mount /dev/block/mmcblk0p3 /emmc
mount /dev/block/mmcblk0p3 /emmc
~ # ls -l emmc
ls -l emmc
-rwxrwxrwx 1 root root 168332495 Nov 11 23:35 factory.zip
drwx------ 2 root root 12288 Oct 23 05:27 lost+found
-rw-rw-rw- 1 root root 2567 Nov 17 22:27 rombackup.zip
~ #

May I ask why you had to mess around with the partitions at all?

lechiffre said:
May I ask why you had to mess around with the partitions at all?
Click to expand...
Click to collapse
It was keep rebooting itself so I was trying to reflash CM7 but didn't work. Next I was going back to stock to start over and that didn't work. Found one thread about DD boot.img, system.img and factory.zip to mmcblk0p3 then 8 failed attempt to restore to stock. etc...
I'm sure that while I was trying to fix I made more mess.

I did adb logcat and got the permission denied error.
Code:
C:\Program Files\Android\android-sdk\platform-tools>adb logcat
- waiting for device -
- exec '/system/bin/sh' failed: Permission denied (13) -

Did you try going into clockwork recovery and using the fix permissions option?

tuxhacker said:
It was keep rebooting itself so I was trying to reflash CM7 but didn't work. Next I was going back to stock to start over and that didn't work. Found one thread about DD boot.img, system.img and factory.zip to mmcblk0p3 then 8 failed attempt to restore to stock. etc...
I'm sure that while I was trying to fix I made more mess.
Click to expand...
Click to collapse
I still don't get why you decided the partitions were faulty.
This might not help you now but might help others in you situation. IMO the process should be when you encounter bootlooping:
1. Reflash current OS using CWR 3.1.0 uSD.
2. If Step 1 fails, using CWR 3.1.0 uSD: format /system /data /cache. Attempt to install CM7. If CM7 install fails, attempt to install stock.
3. ***Requires a a working CWR backup which should contain your original boot partition***
If Step 2 fails, using CWR 3.1.0 uSD: format /system /data /cache and /boot. Restore stock /boot partition only via advanced restore. Attempt to install CM7 or stock.
4. ONLY if the previous steps fail should you even touch any partition tool. I've never had to use any, but I've never messed with the partitions in the first place (ie double booting off eMMC).

Just wanted to share that getting stuck on the boot screen may not have anything todo with what or how you've flashed.
On a fresh install/flash of CM7 I can reboot just fine as many times as I want. As soon as I restore all my apps and reboot I get stuck on the boot screen.
So SOMETHING amongst all the apps I have backed up gets me stuck on the boot screen. Really don't want to go through a reboot for each app one at a time though

FIXED - wipe battery status in CWM
This problem seems to occur when the battery runs out, Nook is plugged in and then it hangs at "the future..."
So to fix this problem, boot into CWM (using CWM for SD) and go to Advanced-Recovery and Wipe Battery Status. Remove the CWM SD and go back to the root menu and reboot.
Your CM7 would boot now just fine. I don;t know what the problem is yet, but that seems to fix it. It saved me from reinstall.
the Nook gets into this state only when the battery is completely drained.

TuxHacker, did you ever resolve your issue of what seems to be the internal memory being in a write-protected state? I'm in the exact same boat you are but instead of CM7 I got CWR 3.0.0.5 installed on my boot and brianf's custom froyo installed.
I agree it seems like the device is now write protected as I've mounted boot/system/media and deleted everything in there, ls'd to double check, but once I remount, all the old stuff is back there again.
I also tried using samuelhalff's NookUMC app to mount all the partitions in windows, deleted everything, and upon remount, all the files are back. The NookUMC app was the one I initially used to copy a bunch of mp3's and vids to the media partition in the first place and now this partition behaves as if it was write-protected as well.
lechiffre said:
I still don't get why you decided the partitions were faulty.
This might not help you now but might help others in you situation. IMO the process should be when you encounter bootlooping:
1. Reflash current OS using CWR 3.1.0 uSD.
2. If Step 1 fails, using CWR 3.1.0 uSD: format /system /data /cache. Attempt to install CM7. If CM7 install fails, attempt to install stock.
3. ***Requires a a working CWR backup which should contain your original boot partition***
If Step 2 fails, using CWR 3.1.0 uSD: format /system /data /cache and /boot. Restore stock /boot partition only via advanced restore. Attempt to install CM7 or stock.
4. ONLY if the previous steps fail should you even touch any partition tool. I've never had to use any, but I've never messed with the partitions in the first place (ie double booting off eMMC).
Click to expand...
Click to collapse
I can't speak for TuxHacker, but mucking around with the partitions seems to be a last ditch effort to at least *change* anything on the device. I've followed a few guides on here about showing the partition table and mine matches a stock partition table. I haven't gotten around to actually modifying any of the partitions yet though...
In all of your steps, the first sub-step is to format one or all of /system /data /cache /boot. This is precisely the step that fails for us with "Error Formatting /system!" or any of the others The only CWR that it doesn't fail on is CWR 3.0.0.6, but any flashes don't take, the NC just reverts back to what it was just before the system decided to go read-only.
I'm running off SD now but that is a pretty crappy experience... if anyone can fix the mess we got ourselves into I will def buy that guy a cold one!

drazil22 said:
In all of your steps, the first sub-step is to format one or all of /system /data /cache /boot. This is precisely the step that fails for us with "Error Formatting /system!" or any of the others The only CWR that it doesn't fail on is CWR 3.0.0.6, but any flashes don't take, the NC just reverts back to what it was just before the system decided to go read-only.
I'm running off SD now but that is a pretty crappy experience... if anyone can fix the mess we got ourselves into I will def buy that guy a cold one!
Click to expand...
Click to collapse
Yes. And on CWR 3.0.0.6 I can't connect via ADB so can't do much with it. On CWR 3.0.1.0 and CWR 3.0.0.5 I can connect via ADB but can't format. I tried all the ADB connect tips and tricks but no go.
I think it coubd be a permission issue since I get - exec '/system/bin/sh' failed: Permission denied (13) - when I tried ABD logcat while its rebooting.
I'm also running off SD now and it is really bad.

I'm in the same boat as you guys and I just wanted to add my two cents.
I've tried multiple times to use the partitioning tools that drazil22 is talking about, but every time I reboot, the partitions come back. What is weird is that while I'm still in adb, after I've written the partition table back to the device, is that it shows the new partition table when I tell it to print it out. I can exit all the way out of adb and, unless I've rebooted my nook, the partitions are back to the way they were. However, once I reboot my nook, the partitions come back...
I've gone as far as deleting every single partition and then rebooting just so that I could have a brick to take back to B&N, but the stupid partitions keep coming back...

lol that's what I was thinking too... brick the thing and get the store to reflash it, as someone else with a bricked nook did. I think the store must have another utility or device to reflash it back to stock.
The weird thing is any changes I make stay for the session until I unmount. I tried to copy the system.img and boot.img which is a little over 500MB to the /media partition (mmcblk0p8) but because I filled it with mp3's and videos, only about 200MB was free and of course the adb push errored out saying not enough space. I then navigated to the /media partition, deleted a bunch of videos and was able to adb push the two files over. I was also able to run the dd commands and got the expected results. Upon reboot, of course nothing got dd'd, the two .img files I copied to /media were gone, and the videos I deleted to free up space were back!
I was also hoping that with the new B&N update to 1.20, they might have released a flashing utility but I guess that was wishful thinking...
Edit: one other peculiar thing I noticed is that when I use adb when booted into CM7 (using the SD), it shows the serial number as 11223344556677. When I use adb booted up using the CWR on my boot partition, or with a bootable SD, it shows the actual serial number written on the sticker behind the sd cover.
getllamasfast said:
I'm in the same boat as you guys and I just wanted to add my two cents.
I've tried multiple times to use the partitioning tools that drazil22 is talking about, but every time I reboot, the partitions come back. What is weird is that while I'm still in adb, after I've written the partition table back to the device, is that it shows the new partition table when I tell it to print it out. I can exit all the way out of adb and, unless I've rebooted my nook, the partitions are back to the way they were. However, once I reboot my nook, the partitions come back...
I've gone as far as deleting every single partition and then rebooting just so that I could have a brick to take back to B&N, but the stupid partitions keep coming back...
Click to expand...
Click to collapse

This is odd, but I dont think this is limited to CM7 as I've seen it happen with different phones running AOSP. Over on the Evo there was numerous accounts of peoples devices suddenly rebooting and then getting stuck in a bootloop, all partitions seemed to be corrupted including the recovery partition and there was absolutely no way to write to the system anymore. Complete booting brick. No one was able to find the cause and no one was able to find a fix.

RileyGrant said:
This is odd, but I dont think this is limited to CM7 as I've seen it happen with different phones running AOSP. Over on the Evo there was numerous accounts of peoples devices suddenly rebooting and then getting stuck in a bootloop, all partitions seemed to be corrupted including the recovery partition and there was absolutely no way to write to the system anymore. Complete booting brick. No one was able to find the cause and no one was able to find a fix.
Click to expand...
Click to collapse
I really hope this isn't true...
On an unrelated note: Do you think that B&N would notice if I microwaved my nook for a few seconds?

[Q] Help getting any rom to run off internal

Ok, backstory, picked up this Nook Color on craigslist, came with Honeycomb v4 on microSD, booted fine into that, but without uSD would boot to 'n' screen and freeze/stall. Got another uSD formatted with CWM Recovery and the clean original nook image to try and load that from scratch. While following the instructions to restore the original image I would get errors while trying to format system and data (something to the effect of Error cannot format system/!). So I tried to install both CWM to the internal and CM7 to the internal and both would say install complete from microSD, but when booting without the uSD, it would still try to boot into the original nook software and hand on the 'n'.
I tried this to see if my partitions were messed up, but I had the same partition structure and size as it should be (according to the post):
http://forum.xda-developers.com/showthread.php?p=13003431#post13003431
Possibly because I ran this "repartition-boot-with-stock" from this post:
http://forum.xda-developers.com/showthread.php?t=914690
Please help, would prefer to run this off the internal!
Got CM7 running off yet another microSD with this thread:
http://forum.xda-developers.com/showthread.php?t=1000957

Assuming the partition table is in tact then try formatting /system /data /cache in Clockworkmod.
If that doesn't work if might be time to entertain the possibility that you were sold a Nook with a bad emmc.
Sent from my NookColor using XDA App

When I try to format /system /data /cache in CWM, I get an error message. What is the function of the emmc?

mattdogg02 said:
When I try to format /system /data /cache in CWM, I get an error message. What is the function of the emmc?
Click to expand...
Click to collapse
Putting it in PC terms, the emmc functions as the ROM for the bios, and as the solid state drive for whatever you're running on internal memory.
(What is the term for the tablet/smartphone equivalent of the "bios"?)

akaCat said:
(What is the term for the tablet/smartphone equivalent of the "bios"?)
Click to expand...
Click to collapse
Bootloader.
As to the OP - It's still possible your internal flash is bad but the fact that you can list your partition table gives me hope that isn't the case.
I read through JoJa15's post you linked in "Dummies Guide to Fixing 'My Nook Won't Boot'" - It sounds like you listed your partition table per his post and found that it matched what he posted but didn't modify anything right?
The fact that your partition table appears to be in tact is good but the contents of those partitions could be complete gibberish which may explain why CWM errors out when trying to format them. What is the exact error CWM is giving?
I think the next "safe" step is to have a look at DeanGibson's post here: http://forum.xda-developers.com/showthread.php?t=1094371
Dean's CWM scripts will essentially blow away partitions 6-8 (/data / cache and /emmc) and re-create them. If your problem happens to be in one of those partitions then his tool may be a quick fix without having to play with fdisk. That said, I doubt it will work since you can't format /system (partition 5) and his tool doesn't touch the /system partition.
At that point you are pretty much left playing with fdisk, unless you can sweet talk DeanGibson into putting together a CWM flash that will re-do partitions 4 and 5 (extended partition and /system partition) which he may do.
From there it boils down to how comfortable you are with the Linux commands dd and fdisk...?
Good Luck,
Martian21

Ok, followed Dean's instructions with the packages from his post, but still no go.
The error I'm getting when going to Mounts and Storage Menu and running the format /system /data /cache options are:
ClockworkMod Recovery v3.0.2.8
Formatting /system...
Error formatting /system!
Formatting /data...
Error formatting /data!
Formatting /cache...
Error formatting /cache!
Really want to try and get this resolved as I want to install stuff onto the internal!

No one with any other advice on this?

mattdogg02 said:
No one with any other advice on this?
Click to expand...
Click to collapse
Your previous post showed that you were using clockworkmod recovery v3.0.2.8, that version does not have support for the “blue dot” NC. Not knowing for sure if your NC is really a “blue dot” or an original one, I would follow these steps.
1. Create a bootable CWM v3.2.0.1 SD card using the image located HERE. The instructions for it are located HERE. I know the post says v3.0.2.1, but it is miss-marked.
2. Once the card is made, download the repartitioning files located HERE, and the stock 1.2 image file “update-nc-stock-1.2-signed.zip” located HERE.
3. Put all those zip files onto the SD Card
4. Shut down the NC
5. Insert and start the bootable SD card
6. Follow the directions to flash the repartitioning files
7. Once that completes, flash the stock 1.2 image
8. When that is done, remove the SD card, and reboot the device
Hopefully at this point, you will be booting into a stock 1.2.0 system. You can now do whatever you want with the device.

[USER][PARTITIONS] Nook Color EMMC Partition Repair

Several users have complained that they get blank screens and cannot flash new roms to their Nook Color. And sometimes they end up in a recovery bootloop where it will do nothing but boot to recovery no matter what they choose in the boot menu. Sometimes this is due to corrupted partitions on internal memory.
DizzyDen has prepared some .img files that can be burned to emmc to repair some of these issues, and they work well. But some of the files are very large and it takes a little knowledge of adb commands on the part of the users. And some users cannot get adb working on their machines. So I started investigating other solutions, and I have made some tools that work that I hope are user friendly.
Dean Gibson has a thread that describes how to repartition emmc to set the partition sizes for data and media to the user's preference. He repartitions partitions p6 (data), p7 (cache) and p8 (media). In studying his zip, I figured out how to make his tool repair partitions p4 (extended), p5 (system), p6 (data), p7 (cache), and p8 (media). And I was able to add additional commands to also repair partition p1 (boot). I asked Dean's permission to post his tools as modified by me and he agreed. Thanks Dean!
So that takes care of partitions 1, 4, 5, 6, 7, and 8.
Partitions 2 and 3 are very special and one must be very careful with them. Partition 2 is 'rom', which holds information that is specific to the user's device (serial number, etc.), and it is used by the system to set flags for deciding whether to boot to recovery or not and set the boot count that is used to decide whether to do a reset to factory conditions (8 failed boots). Partition 3 is 'factory' and holds the factory.zip file used by the 8 failed boot reset (if you want to learn more about the 8 failed boot reset, go to my tips thread linked in my signature). It also holds a backup of the device information in partition 2. So it is possible to repair partition 2 if partition 3 is still intact.
A few users have somehow managed to flash Nook Tablet ROMs to their Nook Colors and really messed up partition 4. (Edit: and now I know how it happened, some idiot recommended that they remove the first line of the updater script. NEVER do that! That line is a safety check to make sure you are flashing to the right device. You can also defeat the safety check by using an old CWM that has the toggle, 'disable asserts'. Never do that either.) And since partition 4 is the extended partition that holds partitions 5, 6, 7, and 8, they get messed up too. To repair those partitions along with partition 1, use CWM recovery to flash the two zips attached below. Be warned that everything in emmc media (p8) will be wiped out, so you may want to back that up first if you still can. The first zip to flash is 'NookColor-emmc-repair-partitions-1-4-5-6-7-8.zip'. It will recreate those partitions on emmc. As soon as you have sucessfully flashed that zip, you must reboot the Nook Color back to CWM so that the updated partition table is read by CWM. Then you need to flash 'NookColor-emmc-format-partitions-5-6-7-8.zip' (partitions 1 and 4 do not need formatting). It will format the newly created partitions to the correct structure. Now you can use CWM to restore an earlier nandroid backup or flash your favorite ROM (including stock, get version 1.4.3 that I have modified to be flashable with CWM here, or DizzyDen has posted some excellent 1.4.1 stock ROMs here). If you are going to flash a stock ROM, you must be sure to use the format zip or the stock ROM will not boot properly.
If you are in a recovery bootloop, the first thing I recommend trying is to use my CWM version 5.5.0.4 bootable SD that is discussed in my tips thread linked in my signature and has been modified to help get out of some kinds of recovery flag bootloops. If you are in a recovery bootloop that just hangs, it may get you out of it after exiting my CWM with the 'reboot' command in the menu. But if you are still in the loop after doing that, it may be because your device info is missing or corrupted in partition 2. It will not boot to a ROM without this info. (Specifically, it needs a file in /rom/devconf named DeviceID. It is a text file with your 16 digit serial number in it followed by a line feed, 17 bytes.) Try flashing with CWM my 'NookColor-emmc-repair-partition-2.zip' attached to this post to recreate that info. But I recommend this as a last resort, since messing with that partition is risky. That zip will recreate the partition, reset the flags and copy your device specific information from partition 3. But your partition 3 must be intact for this to work. If it is not, the zip will abort and do nothing.
Additionally, for those that do not want to use CWM, I have made a bootable SD that has an older version of TWRP here. Newer versions of TWRP will return an error message when trying to flash these zips. It also has been modified to get you out of some kinds of bootloops.
Two points of information. First, I have included a temporary copy of CWM 5.5.0.4 on the boot partition of my repair so that if tries to reboot to emmc before you put a ROM on it, it goes to CWM. It will be removed as soon as you restore a backup or flash a ROM. Second, the new partition scheme created with my zip is for the original Nook Color's 1GB data and 5GB media. If you want one of the other schemes (5GB data/1GB media or 2GB data/4GB media) go to Dean Gibson's thread and flash his zips after you have repaired your system with mine. See his thread here.
I'm adding a little extra information about emmc partition structure for those interested. With any MBR disk there can be a maximum of four primary partitions. So to have more than four partitions the last primary partition is created as an extended partition so multiple logical partitions can be made inside it. The emmc structure is: p1 (boot, fat, primary), p2 (rom, fat, primary), p3 (factory, ext3, primary), p4 (extended, going from end of p3 to end of the disk), p5 (system, ext2, logical, inside the extended), p6 (data, ext3, logical, inside the extended), p7 (cache, ext3, logical, inside the extended) and p8 (media, fat, logical, inside the extended).

You save my nook color
Thank you so much. My serial number and other information were recovered successfully. Without those information I could not boot into any rom. If you cannot boot into ROM after following the first 2 steps, try recover partition 2. It works for me.
:laugh::laugh::laugh::laugh::laugh:

Thanks
My nook has been stuck in a "will not boot" state for about a week. I could run CWM and cyanoboot, but when ever I tried to boot CM I would get stuck at the "loading..." screen. I tried loading both CM7 & CM9 but neither one would boot.
I ran both repair scripts, reloaded CM7.1 and success!
Thanks Leapinlar! :good:

THANK YOU!!!!!!
Right from my 1st install I couldn't get the bar at the bottom of the screen, which made using the Kindle app more than a little difficult. This finally cleared everything off so I could start with a clean slate, and BINGO! I know have the bottom bar on all the screens. I assume when I go in to the Kindle app it will be ok now also (I just have to format a 16gb microSD and put in the Nook Color 1st).
I can't thank you enough!!!!

Ugh! Tried this method too, and I still cannot get the nook to boot into CWR or CWM. I tried the 8 boots thing too, but I don't know if I ever did it right because I have cyanogen mod installed on emmc. Not sure how to repair the partition if I cannot even boot into anything that allows me to flash the zip to the chip. I thought it may be the sd, but the sd cards work on my other nook. I have now basically dissembled my nook color trying to find any other solution I wish I knew what happened in the first place.

czarofthefrozentundra said:
Ugh! Tried this method too, and I still cannot get the nook to boot into CWR or CWM. I tried the 8 boots thing too, but I don't know if I ever did it right because I have cyanogen mod installed on emmc. Not sure how to repair the partition if I cannot even boot into anything that allows me to flash the zip to the chip. I thought it may be the sd, but the sd cards work on my other nook. I have now basically dissembled my nook color trying to find any other solution I wish I knew what happened in the first place.
Click to expand...
Click to collapse
Did you try my version of the CWM bootable SD card? It is on my tips thread and has been modified to boot in certain types of recovery bootloops. Unless you get CWM running you cannot flash things to internal memory. And depending on where in the boot process it hangs, you may not be able to get adb working to put things there either. And the 8 failed boots will not work unless you have stock recovery still on emmc.
Sent from my NookColor using Tapatalk

leapinlar said:
Did you try my version of the CWM bootable SD card? It is on my tips thread and has been modified to boot in certain types of recovery bootloops. Unless you get CWM running you cannot flash things to internal memory. And depending on where in the boot process it hangs, you may not be able to get adb working to put things there either. And the 8 failed boots will not work unless you have stock recovery still on emmc.
Sent from my NookColor using Tapatalk
Click to expand...
Click to collapse
Yup. Tried the card. I believe I replaced the emmc with cyanogenmod back in the day. Starts, goes to loading, turns black, then done. Cannot do anything after that. Bummer, sounds like it is actually toast.

czarofthefrozentundra said:
Yup. Tried the card. I believe I replaced the emmc with cyanogenmod back in the day. Starts, goes to loading, turns black, then done. Cannot do anything after that. Bummer, sounds like it is actually toast.
Click to expand...
Click to collapse
If you can get adb working while it is sitting there black, you can push the stock recovery files to partition one. Then you may be able to do the 8 failed boots. You can extract the stock recovery files from my zip in my tips thread.

leapinlar said:
If you can get adb working while it is sitting there black, you can push the stock recovery files to partition one. Then you may be able to do the 8 failed boots. You can extract the stock recovery files from my zip in my tips thread.
Click to expand...
Click to collapse
Worth a shot. Have nothing more to lose other than time. Maybe adb will work with you card in it. It didn't work with everything else I tried.

OMG OMG thank you soooo much for this thread , you saved my reading addict self from going insane ......

You've done a great job on collecting all of these useful things, especially for those who are stuck with their Nook Color boot looping. (I was once that guy) Dean helped me out with his data zips as well way back! Thanks for all this! :good: :victory:

Much thanks, leapinlar. Restored a nandroid with TWRP that was corrupted and lost my boot partition. I used your first 2 repair zips and I'm back in business. Your many contributions are greatly appreciated.
Mike T

OMG! Thank you so much for putting this up! Back at the beginning of the year I was having problems with my NC not going into USB Mode and only showing a black arrow when trying to load books and following this finally fixed it. Great write-up and instructions, thanks for the hard work.

I've been trying to restore my NOOK for about 2 weeks and this post has gotten me the farthest but i'm stuck at the point where my nook will start up, the "Read Forever" splash screen will come up and then it attempts to recover the system since i see an greenish Android screen come up for a second and then i get an error screen saying "Install Failed" with an image of a nook with an exclamation point in it's screen. I'm assuming i've really messed the nook up but here is where I am.
I've reformatted the partitions using your 1-4,5,6,7,8 zip
Rebooted to recovery
Formatted partiions 5,6,7,8 with your zip
Flashed your 1.4.3 stock rom
At this point I can't get any further since it appears something else is wrong and i didn't want to attempt the reformatting of partition 2 without asking if there is anything else i should try. Any help would be appreciated.
Thanks

jmiklus01 said:
I've been trying to restore my NOOK for about 2 weeks and this post has gotten me the farthest but i'm stuck at the point where my nook will start up, the "Read Forever" splash screen will come up and then it attempts to recover the system since i see an greenish Android screen come up for a second and then i get an error screen saying "Install Failed" with an image of a nook with an exclamation point in it's screen. I'm assuming i've really messed the nook up but here is where I am.
I've reformatted the partitions using your 1-4,5,6,7,8 zip
Rebooted to recovery
Formatted partiions 5,6,7,8 with your zip
Flashed your 1.4.3 stock rom
At this point I can't get any further since it appears something else is wrong and i didn't want to attempt the reformatting of partition 2 without asking if there is anything else i should try. Any help would be appreciated.
Thanks
Click to expand...
Click to collapse
Do the partition 2 repair. That is what is messed up and causing the reboot.
Sent from my Nook HD+ using Tapatalk

leapinlar said:
Do the partition 2 repair. That is what is messed up and causing the reboot.
Sent from my Nook HD+ using Tapatalk
Click to expand...
Click to collapse
I've tried the partition2 zip and received an error trying to mount the factory partition. Status 7 was the error code. Is there a way to fix this?

jmiklus01 said:
I've tried the partition2 zip and received an error trying to mount the factory partition. Status 7 was the error code. Is there a way to fix this?
Click to expand...
Click to collapse
Oh, that is really bad news. That means your partition 3 is corrupted and there is no way to retrieve your device info, like serial number, etc. PM me and maybe I can help you get it partly working, but much of the device info is lost if that partition is truly corrupted.
Sent from my BNTV600 using Tapatalk

Restore NC back to stock
View attachment 1500490
leapinlar said:
Oh, that is really bad news. That means your partition 3 is corrupted and there is no way to retrieve your device info, like serial number, etc. PM me and maybe I can help you get it partly working, but much of the device info is lost if that partition is truly corrupted.
Sent from my BNTV600 using Tapatalk
Click to expand...
Click to collapse
I've been trying to restore my daughter NC back to stock for couple months now and no success.
I did flash the P 1-4-5-6-7-8.zip and got this message after reboot:
"CWM-based Recovery v5.5.0.4
E: Can't mount /cache/recovery/command
E: Can't mount /cache/recovery/log
E: Can't open /cache/recovery/log
E: Can't mount /cache/recovery/last_log
E: Can't open /cache/recovery/last_log
during the reboot, there is a menu option to hit "n" for reboot mode option. when i hit "n" it gives me (attachment).
but it won't let me move up or down to select except for the 1st option
Help would be very appreciated

big64dave said:
View attachment 1500490
I've been trying to restore my daughter NC back to stock for couple months now and no success.
I did flash the P 1-4-5-6-7-8.zip and got this message after reboot:
"CWM-based Recovery v5.5.0.4
E: Can't mount /cache/recovery/command
E: Can't mount /cache/recovery/log
E: Can't open /cache/recovery/log
E: Can't mount /cache/recovery/last_log
E: Can't open /cache/recovery/last_log
during the reboot, there is a menu option to hit "n" for reboot mode option. when i hit "n" it gives me (attachment).
but it won't let me move up or down to select except for the 1st option
Help would be very appreciated
Click to expand...
Click to collapse
During reboot it should automatically go to CWM because everything else is wiped. The boot menu only lets you make the first choice because that is all that is there, everything else is wiped. You need to continue to use the CWM to flash the format zip next. Then you can flash a ROM. If the CWM that pops up is not working, use the bootable CWM SD.

leapinlar said:
During reboot it should automatically go to CWM because everything else is wiped. The boot menu only lets you make the first choice because that is all that is there, everything else is wiped. You need to continue to use the CWM to flash the format zip next. Then you can flash a ROM. If the CWM that pops up is not working, use the bootable CWM SD.
Click to expand...
Click to collapse
Thx for replied, the Nook just stock on loading and it won't let me do anything except for power up and down

Nook HD+ Complete EMMC Backup and CWM Format options ?

How can I do a complete backup of the emmc so that if anything happens or I brick something I can restore it and all my device specific stuff will be fine.
I'm on windows so I guess I just need to use something like dd ?
Also does any of the Clockworkmod functions like the format options and Wipe Data/Cache do anything to the emmc or does it only touch the sdcard ?
I am using verygreens latest cwm.

sorrowuk said:
How can I do a complete backup of the emmc so that if anything happens or I brick something I can restore it and all my device specific stuff will be fine.
I'm on windows so I guess I just need to use something like dd ?
Also does any of the Clockworkmod functions like the format options and Wipe Data/Cache do anything to the emmc or does it only touch the sdcard ?
I am using verygreens latest cwm.
Click to expand...
Click to collapse
Verygreen's CWM just does things to SD (except cache, which it shares with emmc). Yes, you can dd it. I did mine. I did it from inside CM10.
Sent from my stock Nook HD+ using XDA Premium

Can you tell me the command to type if you don't mind.
I don't know exactly the format of the dd command

sorrowuk said:
Can you tell me the command to type if you don't mind.
I don't know exactly the format of the dd command
Click to expand...
Click to collapse
dd if=/dev/block/mmcblk0p1 of=/storage/sdcard1/xloader.img
Do that for each of the first 9 partitions, changing the p# and name saved to. Do this in Terminal Emulator in su mode.
Xloader
Bootloader
Recovery
Boot
Rom
Bootdata
Factory
System
Cache
You don't want to do /data (10) as it is huge. This is the same for the HD. Save the .img files in case you need to reverse the process, which I have had to do on my HD on one partition.
The most important one to do is factory (7). It has a backup of your vital system configuration files and also holds the factory zip for resetting to stock. Everyone should do at least that one and keep the file safe. It will be about 450MB.
Sent from my Nook HD+ running CM10.1 on Hybrid SD

Cool thanks
And writing them back is like this I guess ?
dd if=/storage/sdcard1/xloader.img of=/dev/block/mmcblk0p1 ?

sorrowuk said:
Cool thanks
And writing them back is like this I guess ?
dd if=/storage/sdcard1/xloader.img of=/dev/block/mmcblk0p1 ?
Click to expand...
Click to collapse
Yep, if=input file, of=output file. These are images of the partitions so it has the format and file content all there.
EDIT: I just added this information to my HD/HD+ tips thread.
Sent from my Nook HD+ running CM10.1 on Hybrid SD

[Q][Panic] HD+ won't boot, can access CWM SD but can't mount sdcard or emmc.

So my Nook HD+ has been running Evergreen's CM 10.1 EMMC fine for a couple weeks. I've had some lag issues so I ran Lagfix and it worked great (though that's another topic). Today, I ran Lagfix again and my HD+ froze. I pressed the power button for 12 seconds to shut it off and it wouldn't boot, just a black screen. Crap.
Ok, no panic. I try pressing the power button for 30 seconds, plug it in, etc. Nothing. Ok, no biggie, going to have to reflash, right? So I download the updated 6/13 Cm10.1 EMMC, copy it over to my CWM SD card, stick it into my HD+ and boot. Boots into CWM no problem. First thing I see is:
E:Can't mount /cache/recovery/command
E:Can't mount /cache/recovery/log
E:Can't open/cache/recovery/log
E:Can't mount /cache/recovery/last_log
E:Can't open/cache/recovery/last_log
Click to expand...
Click to collapse
Well I've seen that before, so I don't panic as I seem to recall its not a serious error. So I wipe cache thinking that maybe its corrupted. Not sure if that was smart or stupid but it seems it doesn't matter, because I try and install from SDcard and I get can't mount SDcard. Yikes! I choose install from internal SD and I get can't mount EMMC. Yikes!! I try and restore a backup, there is no backup as sdcard can't mount! Ok so I reboot and try it again a few times, the same error. I try running chkdsk on the SD card on my desktop and it checks out fine, no errors. I tried swapping in another clean and newly formatted fat32 SD card with only CM10.1 on it and it won't mount either.
I try going to advance->boot to recovery and pull out the sdcard. My HD+ boots and then is stuck at the screen where it says "NOOK" in white. Right before recovery should load. Its like recovery is missing or something.
Ok, I'm getting nervous that I have a serious problem. I boot my CWM SD card again and plug the HD+ into my desktop (Windows) and run ADB. I can adb shell, so I try and mount sdcard from the shell. I get
mount: mounting /dev/block/mmcblk1p1 on /sdcard failed: no such file or directory.
Click to expand...
Click to collapse
Ok, lets try sideload: adb sideload cm.zip.
failed to write data 'protocol fault (no status)
Click to expand...
Click to collapse
Ok, I have a trick I did one time before when I had a similar problem. I try and run:
adb shell mount -t tmpfs none /sdcard
This should mount my ram as sdcard and then I can push the rom to ram and flash from there. However, the error I get is like tmpfs doesn't exist. Ok, I am no expert so at this point I am stuck.
I didn't want to wipe anything yet as I don't know what that would do. At this point being able to boot into my CWM SD card is the only thing that works and I don't want to mess with it as I am now out of my knowledge area.
Anyone know what I can do here? I mean I can't restore a backup or flash a new rom. Does the HD+ have a download mode so I can use Odin? Is fastboot an option here? I am a few days behind on my backup but I can live with a factory reset if that is called for, no problem.
I've hit panic time, please help! Thanks!

Isn't lagfix that zip that reformats your partitions? How did you flash that on an HD+?
Sent from my Galaxy Tab 2 using XDA Premium

leapinlar said:
Isn't lagfix that zip that reformats your partitions? How did you flash that on an HD+?
Sent from my Galaxy Tab 2 using XDA Premium
Click to expand...
Click to collapse
I'm glad you saw this, as I could use your Nook guruness right about now. This is it: https://play.google.com/store/apps/details?id=com.grilledmonkeydonate.lagfix&feature=search_result. Its just a GUI for fstrim and it runs it on /data.
Is there a download mode on the Nook by any chance? If I could Odin this rom on there, I think I'd be all set, but I have to say, the fact that CWM SD can't mount or find EMMC has me worried.

silkshadow said:
I'm glad you saw this, as I could use your Nook guruness right about now. This is it: https://play.google.com/store/apps/details?id=com.grilledmonkeydonate.lagfix&feature=search_result. Its just a GUI for fstrim and it runs it on /data.
Is there a download mode on the Nook by any chance? If I could Odin this rom on there, I think I'd be all set, but I have to say, the fact that CWM SD can't mount or find EMMC has me worried.
Click to expand...
Click to collapse
That sounds like a dangerous thing to be playing with. There is not a download mode and Odin is for Samsung devices.
It sounds like you borked your partitions. Did you replace the stock recovery with CWM or TWRP?
Sent from my Nook HD+ running CM10.1 on emmc.

leapinlar said:
That sounds like a dangerous thing to be playing with. There is not a download mode and Odin is for Samsung devices.
It sounds like you borked your partitions. Did you replace the stock recovery with CWM or TWRP?
Sent from my Nook HD+ running CM10.1 on emmc.
Click to expand...
Click to collapse
I did initially (like 2 weeks ago) replace the stock recovery with TWRP. I've run TWRP backups a bunch since then. Of course, those are useless with CWM SD, but I have 2 CWM nandroids on my CWM SD (which I can't access since CWM can't mount the SD ). BTW I am using, and used originally, your CWM SD image.
If I screwed up my partitions, is there a fix I can perform from CWM SD or adb?
Edit: BTW, Lagfix also runs fstrim on /cache as well, I had forgotten.

silkshadow said:
I did initially (like 2 weeks ago) replace the stock recovery with TWRP. I've run TWRP backups a bunch since then. Of course, those are useless with CWM SD, but I have 2 CWM nandroids on my CWM SD (which I can;t access since CWM can't mount the SD ). BTW I am using, and used originally, your CWM SD image.
If I screwed up my partitions, is there a fix I can perform from CWM SD?
Click to expand...
Click to collapse
If you had not replaced stock recovery with TWRP you could have done the 8 failed boot reset, but you cannot with TWRP. Also those TWRP backups are worthless because the TWRP emmc backup/restore is broken for the HD+.
You can try to repair the partitions with ADB when booted to CWM. First thing I would try is to DD the boot.img and recovery.img from your CWM backups. Boot.img goes to partition 4 and recovery.img goes to p3.
Sent from my Nook HD+ running CM10.1 on emmc.

leapinlar said:
If you had not replaced stock recovery with TWRP you could have done the 8 failed boot reset, but you cannot with TWRP. Also those TWRP backups are worthless because the TWRP emmc backup/restore is broken for the HD+.
You can try to repair the partitions with ADB when booted to CWM. First thing I would try is to DD the boot.img and recovery.img from your CWM backups. Boot.img goes to partition 4 and recovery.img goes to p3.
Sent from my Nook HD+ running CM10.1 on emmc.
Click to expand...
Click to collapse
I've actually been wanting to put CWM instead of TWRP, but I've been nervous about messing with recovery since I had a problem doing that on an old Samsung. Man I wish I had just bit the bullet and re-flashed CWM.
I know how to DD, but repairing the partitions is a step above what I've done before. Is there a tutorial on how to do this? Thanks!
Edit: Wait maybe I don't know how to DD. cat proc/mtd gives an error. How do I identify what to backup?
Edit2: Nevermind, I knew I saw it somewhere and there it is in your tips thread. Sorry, my bad. I'll report back after I have done it.

Ok, I'm stuck, sorry. How do I get the boot.img from my PC to my Nook? CWM won't mount SDcard. Can I just push the file to /data and then restore it from there?
Edit: Fastboot doesn't seem to work in CWM recovery?

silkshadow said:
Ok, I'm stuck, sorry. How do I get the boot.img from my PC to my Nook? CWM won't mount SDcard. Can I just push the file to /data and then restore it from there?
Click to expand...
Click to collapse
Maybe, if your /data is still ok.
Sent from my Nook HD+ running CM10.1 on emmc.

leapinlar said:
Maybe, if your /data is still ok.
Sent from my Nook HD+ running CM10.1 on emmc.
Click to expand...
Click to collapse
Thanks, trying it now.

Ok:
~ # dd if=/data/boot.img of=/dev/block/mmcblk0p4
dd if=/data/boot.img of=/dev/block/mmcblk0p4
32768+0 records in
32768+0 records out
16777216 bytes (16.0MB) copied, 0.445588 seconds, 35.9MB/s
~ # dd if=/data/recovery.img of=/dev/block/mmcblk0p3
dd if=/data/recovery.img of=/dev/block/mmcblk0p3
30720+0 records in
30720+0 records out
15728640 bytes (15.0MB) copied, 0.397918 seconds, 37.7MB/s
Click to expand...
Click to collapse
Ok, this is a stupid question but how do I tell if it worked? The HD still won't boot without CWM SD card and sdcard or EMMC doesn't mount in CWM SD. Reboot ot recovery in CWM SD, then removing SD card, still gives me "nook" start up screen hang.
Was /data able to take the *.img files? If so, would it be a good idea to push the cm 10.1 rom to it and try and do a full flash? That doesn't have a boot partition though, right?
Edit: BTW, /data was empty in adb shell (except for the 2 img files i pushed there). There was a "media" subdir but it was also empty.

silkshadow said:
Ok:
Ok, this is a stupid question but how do I tell if it worked? The HD still won't boot without CWM SD card and sdcard or EMMC doesn't mount in CWM SD. Reboot ot recovery in CWM SD, then removing SD card, still gives me "nook" start up screen hang.
Click to expand...
Click to collapse
Take the card out, boot holding the power and n key. It should try to boot to recovery. Which backup did you use, stock or one you did after the CM10.1 install?
Sent from my Nook HD+ running CM10.1 on emmc.

leapinlar said:
Take the card out, boot holding the power and n key. It should try to boot to recovery. Which backup did you use, stock or one you did after the CM10.1 install?
Sent from my Nook HD+ running CM10.1 on emmc.
Click to expand...
Click to collapse
The HD still doesn't boot at all without the CWM SD card in. Just black screen. I can get it to boot without the SD card only if I choose advanced->boot to recovery in CWM SD. Then it just hands at the "nook" screen (the one before Cyanogenmod boot universal boot should appear).
I *think* it was the one from CM 10.1 but I cannot be 100% sure. Its the last backup I did on the CWM SD, and I recall thinking that I should have a backup of CM 10.1 but sometimes I am an idiot and don't listen to myself.

silkshadow said:
Was /data able to take the *.img files? If so, would it be a good idea to push the cm 10.1 rom to it and try and do a full flash? That doesn't have a boot partition though, right?
Edit: BTW, /data was empty in adb shell (except for the 2 img files i pushed there). There was a "media" subdir but it was also empty.
Click to expand...
Click to collapse
no, putting the CM10.1 rom zip on /data will do no good. You can't get to it to flash it. And the cm zip does include the boot partition.
/data being empty means that data was wiped somehow.
Sent from my Nook HD+ running CM10.1 on emmc.
---------- Post added at 09:20 AM ---------- Previous post was at 09:16 AM ----------
silkshadow said:
The HD still doesn't boot at all without the CWM SD card in. Just black screen. I can get it to boot without the SD card only if I choose advanced->boot to recovery in CWM SD. Then it just hands at the "nook" screen (the one before Cyanogenmod boot universal boot should appear).
I *think* it was the one from CM 10.1 but I cannot be 100% sure. Its the last backup I did on the CWM SD, and I recall thinking that I should have a backup of CM 10.1 but sometimes I am an idiot and don't listen to myself.
Click to expand...
Click to collapse
It would be best if you could restore the boot and recovery from a stock backup. Then stock can try to repair itself.
Edit: if it will not turn on without the SD inserted, you may have also messed up xloader and bootloader partitions.
Sent from my Nook HD+ running CM10.1 on emmc.

leapinlar said:
no, putting the CM10.1 rom zip on /data will do no good. You can't get to it to flash it. And the cm zip does include the boot partition.
/data being empty means that data was wiped somehow.
Sent from my Nook HD+ running CM10.1 on emmc.
Click to expand...
Click to collapse
Ouch but /data loss is not too big, especially at this point. I just want to say you are awesome and thank you so much for helping me here! Anything I can do next? I am not sure what I could've done to wipe data. My HD was lagging a bit today but nothing serious. Just ran lagfix and it froze, but as soon as it froze I shut the Nook down.
Is it strange that I cannot mount EMMC? Is it possible that CWM is not seeing /data on EMMC but just a virtual /data?
Edit: Ok, will try to restore from stock imgs right now.

Ok these are definitely the stock boot and recovery CWM backup images:
~ # dd if=/data/recovery.img of=/dev/block/mmcblk0p3
dd if=/data/recovery.img of=/dev/block/mmcblk0p3
30720+0 records in
30720+0 records out
15728640 bytes (15.0MB) copied, 0.401123 seconds, 37.4MB/s
~ # dd if=/data/boot.img of=/dev/block/mmcblk0p4
dd if=/data/boot.img of=/dev/block/mmcblk0p4
32768+0 records in
32768+0 records out
16777216 bytes (16.0MB) copied, 0.443817 seconds, 36.1MB/s
Click to expand...
Click to collapse
Here's a strange thing. I was expecting to have to go into /data and delete the older boot.img and recovery.img before pushing the new ones. However, /data was empty again.
Ok stock img (I hope) were restored. HD will still not boot (black screen) :crying:. CWM SD advanced ->boot to recovery still hangs at "nook" boot screen the first time. The 2nd time, just black screen and now nothing but black screens.
More weirdness, I've had to plug the HD in and hold down the power button to get it to boot off the CWM SD card every time I take the CWM SD card out and try to boot without it. I just noticed that when I do this the charge light is green and stays green until CWM loads and then it turns amber.
Could this be a bootloader issue? Is there a way to restore that too?

silkshadow said:
Ok these are definitely the stock boot and recovery CWM backup images:
Here's a strange thing. I was expecting to have to go into /data and delete the older boot.img and recovery.img before pushing the new ones. However, /data was empty again.
Ok stock img (I hope) were restored. HD will still not boot (black screen) :crying:. CWM SD advanced ->boot to recovery still hangs at "nook" boot screen the first time. The 2nd time, just black screen and now nothing but black screens.
More weirdness, I've had to plug the HD in and hold down the power button to get it to boot off the CWM SD card every time I take the CWM SD card out and try to boot without it. I just noticed that when I do this the charge light is green and stays green until CWM loads and then it turns amber.
Could this be a bootloader issue? Is there a way to restore that too?
Click to expand...
Click to collapse
When you say black screen without the SD in, you mean it will not turn on?
It looks like the stock stuff took. I might be able to post my stock Xloader and bootloader img files for you. Hang on.
Sent from my Nook HD+ running CM10.1 on emmc.

leapinlar said:
When you say black screen without the SD in, you mean it will not turn on?
It looks like the stock stuff took. I might be able to post my stock Xloader and bootloader img files for you. Hang on.
Sent from my Nook HD+ running CM10.1 on emmc.
Click to expand...
Click to collapse
Yes, It doesn't seem to boot at all.
You.Rule. Thanks!

silkshadow said:
Yes, It doesn't seem to boot at all.
You.Rule. Thanks!
Click to expand...
Click to collapse
try dding these.
http://d-h.st/SG6
Sent from my Nook HD+ running CM10.1 on emmc.

Thank you very much! I will download and DD right now.