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?
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.
I've been attempting to root my SGT 10.1. Thus far I have gotten CWM 5.0.2.7 on the device, but when attempting to select the rooting ROM from the "sdcard", CWM responds that "E:Can't mount /sdcard/" It responds similarly when attempting a backup. I also get the same response when attempting to manually "Mount /data."
The tablet still works fine. The internal memory is fine - I am able to boot normally, and access my files on the device or via USB in Windows. I just can't seem to access the internal memory from CWM, and am therefore unable to flash.
Looking at the log in CWM:
W:using /data/media, no /sdcard found.
W:failed to mount /dev/block/mmcblk0p8 (Invalid argument)
E:Can't mount /sdcard
Any suggestions? I've found similar issues - but they usually indicate that the tablet is unusable, which mine is not. All of the rooting guides I have found seem to assume that the /sdcard or /data will be available in CWM right after flashing.
Thank you for your help.
Ask in the galaxy tab 10.1 forum.
You might get better help.
This is the original 7" forum
Sent from my GT-P1000 using XDA App
I used Clockwork Recovery and managed to format all of the EMMC partitions on my Nook HD. Now it won't boot anymore. I've managed to get it to boot to the "Install Failed" screen. I had a bootable Android card and was able to put recovery files factory.zip, fsck.zip, rombackup.zip, and romrestore.zip from a stock Nook HD onto /dev/block/mmcblk0p7, but the unit spent a while working but eventually failed again.
How do I re-created all the partitions on a Nook HD in this state? The partitions appear to have been created but that's still not enough to make the popular EMMC custom rom installations work, either. All I did was format all the partitions from CWM Recovery, didn't know it would totally hose the device. Thank you all for your help.
When you say you used CWM to format all of the partitions on the HD, how did you do that? For instance, how did you format /factory, there is no menu item to do that?
And copying the content of /factory from one device to another will not work since at least one of the files (rombackup.zip) is specific to only one device.
For more information about the partition structure of the device see my HD/HD+ Tips thread linked in my signature.
Sent from my BN NookHD+ using xda premium
I reformatted them from CWM which obliterated something important. I wish I could just take an EMMC device image and use "dd" to restore the entire device.
Here's the current status: Today I tried a CM10.2 installation and saw the following problems. I hope they might trigger a thought in someone.
System log was:
Formatting /data
I:Formatting unknown device.
W:failed to mount /dev/block/platform/omap/omap_hsmmc.1/by-name/userdata (Invalid argument)
Error mounting /data!
Skipping format...
Done.
I:Can't partition non-vfat: datamedia
I:Can't partition non-vfat: auto
I:Can't format unknown volume: emmc
The state of the partitions that I tried to reformat were:
/bootdata cannot mount or format
/data cannot mount or format
/cache is fine
/system is fine
Perhaps someone can help. I've read a lot of the great content here but I've hit a wall.
A few weeks ago my ovation device was running cm11+cwm but began random rebooting. Clearing the cache+dalvik only helped briefly.
I tried an upgrade with a twrp 3.0.0.0 (using the amazing multiboot recovery SD), but it hung formatting the cache partition (I waited about an hour). Tried again, same thing.
I used adb shell to fix a blank file system type on the cache partition but was only successful in creating an ext2 partition there. I got cm13 booting but it trebuchet kept crashing. I tried twrp again and flashing a different image and tried a factory reset. Big mistake.
Now when I try to boot any recovery SD it doesn't boot all the way. Using adb shell, my dmesg shows that umount is hanging. No emmc partitions seem to be mounted. The partition data exists in dmesg but calls to parted hang. Mkfs.ext4 also hangs (naturally).
So I've lost the ability to fully boot recovery SDs (they are probably hanging when they try to mount the emmc partitions). As such I can't flash a recovery. I have a clockwork backup that has a system.ext.tar file in it, but I don't know how to use it at this point.
I can't mount /rom so I'm worried.
Is my emmc shot? Is there any way to tell?
Thanks!
Would a noEMMC SD be safe?
I guess what I was hoping to do was use adb to completely wipe and restore the device to a sane state, which would include repartitioning and formatting the emmc partitions. Is that possible? Maybe not at this point.
I guess another question would be: if my NookHd+ emmc is technically working but currently unrecoverable, is it possible for me to safely use a NOemmc SD card? There seem to be some warnings about those wrecking emmc but I can't find any technical explanation as to why.
Based on further diagnostics, my emmc is one of the faulty Samsung models and so I think the crashes and ultimate recovery failures were the failure of the emmc.
I've successfully installed 10.1 noEMMC on one microsd. Runs Okay but a lot of apps I am interested in don't work on android from this vintage.
I tried to install 4.4.4/CM11 noEMMC but it can't mount the necessary partitions as per the install process on the iamafanof Wordpress page. I also see SELinux errors in the twrp recovery log. Does anyone know how to overcome this mount issue that apparently impacts some people.
Assuming there are others out there who find this useful, I have some updates.
I was determined to figure out why the CM11 NoEMMC was not working for me but CM10.2 noEMMC works fine. I get the error that many others get: unable to mount /boot, /data, /system.
I used adb shell to connect to the twrp 2.8.0.0 that runs when you boot the CM11 noEMMC SD boot/install image and compared the Linux system differences between that and the system you can see connected to the cwm 6.0.4.? That runs when you boot the CM10.2 noEMMC SD boot/instal image.
First things first: cm10 noEMMC remaps the internal emmc as /dev/block/emcblk1 and the external microsd card slot as blk0 (this is swapped from the norm and correct for a situation where you want to install to the SD as though it were the internal device).
CM11 noEMMC does not do this. I think that the author assumed that if your emmc is bricked then the system won't see your /dev/block/emmcblk0 at all so your external sdcard will take over that number. Clearly that's true for some, but it's not true for me.
I also began poking around the post boot script (in /sbin) to see how the cm11 noEMMC prepares the partitions on the Sd card and to see what Command it uses to create the data partition
Here's the kicker. I was able to mount my emmc rom partition and copy off all that data with an adb pull. I was able to initialize the cache partition (9) as a blank ext4 partition. I was even able to initialize the user partition (10) as ext4... Though I'm not sure that's right. I began mounting partitions and got greedy and tried to mount the whole partition map and it failed.
So, there's something wrong with (at least) one of my partitions. When recovery tries to mount the partitions, mount hangs and recovery fails to fully load. The noEMMC sd card got me around this because it doesn't try to mount any of the emmc partitions let alone all of them.
So, does anyone know if I can make new file systems on every partition and if by luck I'm able to get a twrp or cwm to fully load, will flashing a stock recovery put data on all those partitions?
Thanks
Sorry to resurrect this thread, But it exactly speaks to my issue. You mention that the blk0 and blk1 devices need to be switched for cm11 image to mount partitions properly. Does anyone know specifically where this might be done. Can files of the existing nov4 cm11 image be altered to reverse these two devices?
CalculonsTalent said:
Assuming there are others out there who find this useful, I have some updates.
I was determined to figure out why the CM11 NoEMMC was not working for me but CM10.2 noEMMC works fine. I get the error that many others get: unable to mount /boot, /data, /system.
I used adb shell to connect to the twrp 2.8.0.0 that runs when you boot the CM11 noEMMC SD boot/install image and compared the Linux system differences between that and the system you can see connected to the cwm 6.0.4.? That runs when you boot the CM10.2 noEMMC SD boot/instal image.
First things first: cm10 noEMMC remaps the internal emmc as /dev/block/emcblk1 and the external microsd card slot as blk0 (this is swapped from the norm and correct for a situation where you want to install to the SD as though it were the internal device).
CM11 noEMMC does not do this. I think that the author assumed that if your emmc is bricked then the system won't see your /dev/block/emmcblk0 at all so your external sdcard will take over that number. Clearly that's true for some, but it's not true for me.
I also began poking around the post boot script (in /sbin) to see how the cm11 noEMMC prepares the partitions on the Sd card and to see what Command it uses to create the data partition
Here's the kicker. I was able to mount my emmc rom partition and copy off all that data with an adb pull. I was able to initialize the cache partition (9) as a blank ext4 partition. I was even able to initialize the user partition (10) as ext4... Though I'm not sure that's right. I began mounting partitions and got greedy and tried to mount the whole partition map and it failed.
So, there's something wrong with (at least) one of my partitions. When recovery tries to mount the partitions, mount hangs and recovery fails to fully load. The noEMMC sd card got me around this because it doesn't try to mount any of the emmc partitions let alone all of them.
So, does anyone know if I can make new file systems on every partition and if by luck I'm able to get a twrp or cwm to fully load, will flashing a stock recovery put data on all those partitions?
Thanks
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Could you please teach me how to mount EMMC partitions and retrieve data specially /factory partition with ADB?
I can only boot my Nook HD+ with with bootable SD card with TWRP or CWM.
Thanks.