Hey everyone,
I currently run CM7 off an SD but I was wondering if there are benefits to replacing the stock os on the emmc?
Are there any speed differences or technical pros to it?
Thanks for the input! This is a really fantastic forum!
sent from my nook color
joelszs said:
Hey everyone,
I currently run CM7 off an SD but I was wondering if there are benefits to replacing the stock os on the emmc?
Are there any speed differences or technical pros to it?
Thanks for the input! This is a really fantastic forum!
sent from my nook color
Click to expand...
Click to collapse
From my experience the booting time is almost half if using emmc version. (SD card version ran on a class 4 card). After booting the performance is almost same. You may get better boot time for sd card using a class 6 or class 10 card.
I dont have an answer for you as i picked mine up yesterday and decided to go the SD route at the start i am curious on this question myself.
JustusIV said:
I dont have an answer for you as i picked mine up yesterday and decided to go the SD route at the start i am curious on this question myself.
Click to expand...
Click to collapse
Well from my experience, running from the SD card is very smooth... so for ease of use i highly recommend it for a first go.
I have a follow up question- for some reason my macbook recognizes the second partition of my sd card but my pc desktop does not. I am referring to the partition generated for storage by the CM7 installation process that allows storage on the data card simultaneously.
Any ideas why this would be?
sent from my nook color
joelszs said:
Well from my experience, running from the SD card is very smooth... so for ease of use i highly recommend it for a first go.
I have a follow up question- for some reason my macbook recognizes the second partition of my sd card but my pc desktop does not. I am referring to the partition generated for storage by the CM7 installation process that allows storage on the data card simultaneously.
Any ideas why this would be?
sent from my nook color
Click to expand...
Click to collapse
I use Macs and Windows machines rarely (and I am guessing you run Windows on the desktop) but my guess is the ext4 partitioning that CM7 uses.
I seem to recall that working- at least somewhat- on Mac but not on Windows, but I am not positive.
i chose sd, because it's super easy to backup my sd card as an image by popping it into my laptop. I can then burn that image back to a sd card if i want to try a new android build without messing up my default android install. I can always boot into the original nook os if i want as it is unmodified.
i used a class 2 and it was pretty slow. moving up to a class 6 and 10 has really helped and i don't notice any slowness.
i have not run off internal memory though so i don't have a baseline to compare.
eMMC is faster than my class 2 uSD cards, and it's easier to swa stuff back and forth from a computer/phone/camera/whatever with a removable uSD.
Sent from my Froyo'd Epic using XDA App
Cool, I've been wondering about this myself and was about to make this same thread.
I was concerned because I get a ton of force closes running off the SD, and I wondered if that was a problem that would be solved by going to eemc. Or if somehow I've made a mistake setting up my card and that's the issue. I'm very knew to this whole scene, so I'm still a bit scared of rooting at the moment and would love to iron out the problems I'm having with the SD booting. Things run fast, and fairly smoothly but eventually something will force close, like Market, and then Google Frameworks and then pretty much everything will refuse to run after I tap their icon. Forcing me to restart. Also, some things, trying to download new skins for Beautiful Widgets is impossible. Only get force closes.
I can't figure out if it's anything in particular that causes it to spiral out of control. And what makes it more annoying is this is my girlfriend's new Nook, I'm trying to get it set up for her to work as smoothly as possible. If it was just mine, I wouldn't be as bothered by messing around and trying different configurations and whatnot. But I know she won't be as patient and tolerant of these issues and won't want to keep bugging me with every problem that pops up.
Would you say this is likely a localized problem on my end through some fault of my own? From this thread, it seems people are having pretty great experiences with the SD method. Which might be reassuring. I think I'll do a backup and start from scratch this evening.
@JRSly: What type of uSD card are you using. I was experiencing the same problems you had with booting, force close, refuse to run, thus a final restart. After swapping out four different types of uSD cards, SanDisk (class 2 and 4), A-DATA (class 6), Patriot (class10), I finally deteremined that the Nook is very picky about the type of card. All the cards work fine in my digital camera or PCs, but the A-DATA and Patriot are slow and often hang in the Nook. I am now using the three Sandisk cards with no problem. I recently updated to Nookie Froyo 6.8.5 and it runs great on the SanDisk cards. Just for the test if it will run faster on A-Data (class 6), wouldn't you know it starts to hang and FC just like before. I guess I'll use the A-Data card in my digicam. Try a Sandisk card and see what happens. I even try one of my old Sandisk 2GB card from my Blackberry which is unmarked but has a class 10 performance when measured.
I'm very new to this... and I keep seeing emmc.
What is this? Internal memory?
ax135 said:
@JRSly: What type of uSD card are you using. I was experiencing the same problems you had with booting, force close, refuse to run, thus a final restart. After swapping out four different types of uSD cards, SanDisk (class 2 and 4), A-DATA (class 6), Patriot (class10), I finally deteremined that the Nook is very picky about the type of card. All the cards work fine in my digital camera or PCs, but the A-DATA and Patriot are slow and often hang in the Nook. I am now using the three Sandisk cards with no problem. I recently updated to Nookie Froyo 6.8.5 and it runs great on the SanDisk cards. Just for the test if it will run faster on A-Data (class 6), wouldn't you know it starts to hang and FC just like before. I guess I'll use the A-Data card in my digicam. Try a Sandisk card and see what happens. I even try one of my old Sandisk 2GB card from my Blackberry which is unmarked but has a class 10 performance when measured.
Click to expand...
Click to collapse
I feared that this might be a possibility too. My first attempts were with a little 2Gb card I'd had lying around and it didn't work very well at all. I couldn't get past installing Gapps for all the force closes. The next day I went to Target to get a larger 8 Gb one so I could also play around with Honeycomb, it's a Class 6 Lexar card. I started over last night and tried a couple of attempts at wiping and burning the image and inevitably ran into the same problems. It looks like a crummy(at least in terms of what the Nook likes) card is a distinct possibility. I'll give Sandisk a shot.
BlizzofOZ said:
I'm very new to this... and I keep seeing emmc.
What is this? Internal memory?
Click to expand...
Click to collapse
Yup. (I didn't get it either.)
Since MMC is a sibling of SD cards, it's basically dedicated internal SD storage with a controller.
http://en.wikipedia.org/wiki/MultiMediaCard#eMMC
BlizzofOZ said:
I'm very new to this... and I keep seeing emmc.
What is this? Internal memory?
Click to expand...
Click to collapse
You got it in one.
sd card is self explanatory, of course, and emmc is the internal memory of the NC.
The only DISADVANTAGE to running on emmc is that you lose the stock B&N version of Android.
Other than that- it boots a bit faster, may run a bit faster and be less likely to have force closes and similar problems.
xdabr said:
Yup. (I didn't get it either.)
Since MMC is a sibling of SD cards, it's basically dedicated internal SD storage with a controller.
http://en.wikipedia.org/wiki/MultiMediaCard#eMMC
Click to expand...
Click to collapse
That's what I thought!
Thanks for the cofirmation
Related
I bought a Team 8Gb SDHC class 6 and the HTC freeze and work very very slowly. No obstanding, with the card readers works fine.
In memory mode (HD2) works more less (3Mb write and 6.2Mb read), but the phone works too slow. I power off the phone and change the card to the original Sandisk 2Gb and works nice.
IS there any way to fix it?
I'm assuming you tried formatting it in your PC? Maybe try using a different block size. Others have had success with this technique for various card issues. It's worth a shot.
donalgodon said:
I'm assuming you tried formatting it in your PC? Maybe try using a different block size. Others have had success with this technique for various card issues. It's worth a shot.
Click to expand...
Click to collapse
I didn't format with the PC, I formatted with the SD format tool in HD2. I'll try from the PC.
this happened because you probably have a large music library on the sd card. the htc sense music tb hangs in large libraries
saziz77 said:
this happened because you probably have a large music library on the sd card. the htc sense music tb hangs in large libraries
Click to expand...
Click to collapse
No, I have no music on it. I have some pictures (no too much), a few videos, igo 8, tomtom 7, 2 ebooks and 1 pdf.
I just copy the content from my original SD Sandisk 2Gb (included with the HD2) to the new one (8Gb). With the 2Gb works pretty fast and with the 8Gb is very very slow or sometimes it hangs.
saziz77 said:
this happened because you probably have a large music library on the sd card. the htc sense music tb hangs in large libraries
Click to expand...
Click to collapse
that's the only thing i hate about my hd2. i use a 16gb card and when i hit the music tab, id have to wait 25 seconds before anything comes up. i do have a large music library with about 2500 songs. is there ANY way to keep this from occuring?
I just returned a defective sandisk 8gb SD card.. sometimes it worked sometimes it didn't.. if i worked it was veeery slow..
@oscar8x
I am having the same problem with my Team 16 gb sdhc class 6 card as well. Now I saw that you had the same problem, I am a little concerned. I formatted it using my PC but apparently that does not make much difference.
Also, I found the card rather slow not as fast as it is claimed to be. What do you think?
I would be really happy if there is solution to make it work. I can't get past entering the PIN phase.
leoparis said:
@oscar8x
I am having the same problem with my Team 16 gb sdhc class 6 card as well. Now I saw that you had the same problem, I am a little concerned. I formatted it using my PC but apparently that does not make much difference.
Also, I found the card rather slow not as fast as it is claimed to be. What do you think?
I would be really happy if there is solution to make it work. I can't get past entering the PIN phase.
Click to expand...
Click to collapse
I think it's a fake class 6 card, but I gonna try it on another phone (N97 mini) and I'll see how it works. I'll post que results
Try formatting it in FAT 32 but block size should be 4096 - use windows 7 to format card
oscar8x said:
No, I have no music on it. I have some pictures (no too much), a few videos, igo 8, tomtom 7, 2 ebooks and 1 pdf.
I just copy the content from my original SD Sandisk 2Gb (included with the HD2) to the new one (8Gb). With the 2Gb works pretty fast and with the 8Gb is very very slow or sometimes it hangs.
Click to expand...
Click to collapse
Delete "Application Data" folder on the sd and let the device rebuild a brand new one.
I had a similar problem with a kingston 16gb, solved in this way
cubemaster said:
Delete "Application Data" folder on the sd and let the device rebuild a brand new one.
I had a similar problem with a kingston 16gb, solved in this way
Click to expand...
Click to collapse
Yes, that was the problem. I formatted the card and I copied all folder excluding "Application Data" and it's working right now.
Thanks for your answers.
I am a newbie, still on original nook firmware think its 1.01
I am having trouble trying to install cm7 on a 16gb microsd card. I had a look in XDA and there are a few people having the same problems awhile ago, and then there are some who have managed to do it. I have trawled thru quite a few pages int he foru but can't seem to find a solution. Anyone here has any luck with installing cm7 to boot from a 16gb microsd? Any comments would be appreciated.
My problem seem to be, after i imaged the microsd and then copied the update night;y cm7. zip file across, the nook booth from the microsd but and setsups but then just hangs after superfiles(?) have been installed, whereas the guide saystehat it will ventually go to a blanks screen, which mine never does, then when i force shuitdown and reboot, it installls some android files but when it reboots after that it either hangs onthe ANDROID_ screen (keeps rebooting over and over again) or it goes to the cyogenm7 graphic screen and keeps rebooting to the startup screen.
Thanks
Try a different SD card, preferably 8G or less. Quite a few cards don't play nice. If you can get CM7 installed on a different card but still want to try it on your 16G card, you can image it over from your other working card. You'd then need to expand the 4th partition to reclaim the space then. It may work, or you may get random quirkiness using that card with force closes here and there.
I'd make sure to get a genuine SD card from a reputable dealer, not some dodgy one off Ebay. I have found Sandisk to be very reliable, and generally a cheaper Class 2 or 4 card will work better due to higher speeds with small random block r/w.
Good luck.
Hi there! I've been using CM7 for a while now and have had three or four occasions so far where my 16 Gig Patriot Class 10 card has ended up with either partially or completely corrupted data and I'm curious if this is just an issue with a cheap card, some feature of the Nook or related to something in CM7. Most of the time it will eventually come up with a damaged SD card warning but prior to that my directory structure gets mutated into symbols instead of letters (it's current state).
I'm planning on swapping out the card with a SanDisk I have here so if it's the card I suspect the problem will go away but mostly I was wondering:
1. Anyone else have this issue?
2. Are there any known fixes?
Appreciate any help. Would eventually like to be able to use this card for storing movies but having it fritz out from time to time is a real pain with the amount of stuff android keeps on the SD cards.
I have set up the CM7 on an SD boot and it works for the most part.
However it seems very unstable, about 3/10 uses it will crash apps. I really only have Aldiko and the Nook App on it and maybe Angry Birds and a Task Killer.
Aldiko and Nook etc will just go into an error loop saying the app stopped unexpectedly and then I have to hold the power button to shut it down.
My question is if this is typical of using the SD root method?
Then, if I do a full hardware root/ROM is it generally more stable in your experiences?
I suspect that part of my problems are the SD card itself, I had a 4GB Class 2 Sandisk card initially and it worked well but it was very very slow. So I got a Transcend brand 8GB Class 6 card which should work, it is a big name brand and all, and is much faster but CM7 seems very unstable. Is it all just the card?
Yes, your card is the culprit. So far from people reporting here you need a SanDisk Class 4 card. Its all about the 4k read/write speeds of the card you're using. You want a 1.0+ in CrystalDiskMark to get decent performace and get rid of the FC's. I am using the card I linked here and have not had any problems running apps or the Nook freezing.
- Aerlock
I had similar problems (sometimes intermittently) using an A-data card, I think it was 8GB class 6. I finally installed to emmc and have not had any problems since. The CM7 nightlies go to the point of being so good that I never needed to boot into stock anymore anyway.
So if I get it working on the SD, is it even worth doing the perm internal ROM mod?
Or is the SD MOD just as good/better?
MuGGzyx said:
So if I get it working on the SD, is it even worth doing the perm internal ROM mod?
Or is the SD MOD just as good/better?
Click to expand...
Click to collapse
Running off the SD is so good I haven't even felt like trying to put it on the internal memory. The only thing you lose by running it from the SD card is the ability to pop out the SD card whenever you want, though the only times I've popped out the SD card is to put the newest nightly on the boot partition. And thats just cause I've been too lazy to figure out the exact mount commands to mount it on the nook. If I want to get/put files off/on the SD card I just plug it into my computer.
- Aerlock
MuGGzyx said:
So if I get it working on the SD, is it even worth doing the perm internal ROM mod?
Or is the SD MOD just as good/better?
Click to expand...
Click to collapse
Internal is always more stable.
Sent from my LG Optimus V using Tapatalk
I didn't run any benchmarks when I had it on a SD card (16 GB SanDisk class 4) but it seemed about as good as it has been after switching to eMMC.
The CM7 SD card mounts internal memory on mmcblk0 and uses it... (I presume for caching, etc) Speed of the SD shouldn't cause crashes. Slowness yes, but crashes?
Re: SD vs. eMMC, an SD install can be just as fast and stable as eMMC, but SD installs also seem somewhat prone to suddenly and mysteriously losing that stability, developing FCs, WiFi issues, lag and even freezes/crashes. There are also more robust and straightforward tools for managing eMMC installs; both CWM and ROM Manager tend to have quirky interactions with SD installs, performing some operations on the SD partitions and others on the internal partitions. I would advise anyone who finds that their SD install has become their sole or primary OS to eventually move it to eMMC. Even if you're still using stock quite a bit, an eMMC dual boot (see my sig link) has advantages over running one system from SD--mainly, that the two OSes can both use the SD for storage.
gyrfalcon said:
The CM7 SD card mounts internal memory on mmcblk0 and uses it... (I presume for caching, etc) Speed of the SD shouldn't cause crashes. Slowness yes, but crashes?
Click to expand...
Click to collapse
See this thread: http://forum.xda-developers.com/showthread.php?p=12964262
There's no such thing as "Speed of the SD." There are several metrics, primarily large sequential vs. small random reads and writes. Card class (what most people assume equates to "speed") is based on the former, whereas performance as a boot drive correlates with the latter. A card optimized for large writes tends to suffer badly in small-block random r/w. There's no such thing, presently, as a card optimized for small-block r/w, but SanDisk class 2, 4, and unclassed cards tend to have very balanced benchmarks, with reasonable performance across all metrics. This places their small-block r/w speeds 10x and 100x ahead of a card optimized to meet class requirements.
I've also been hearing there's an issue with some cards reporting their reads and writes using an oddball protocol that's currently unsupported in the kernel.
Hi all, a few questions here if you don't mind. I'm a recent owner of a HD+ and have had a great time with it but I am ready to get CM on it now. At first I wanted to dual-boot using either Hybrid or Pure but now I think I'm going to just to EMMC.
I have a lot of comics I want to store, if I'm using EMMC is there no problem using a 64gb class 10 card? From what I've read it seems that class 10 cards only cause problems if you are booting from the SD card?
If I do go hybrid or pure, it is better to use a class 4 (32gb max?) card for this correct?
I do think that I am just going to go the EMMC route, does doing this erase everything already on the Nook or just the OS? (I need to remove any other media myself?)
Thanks a lot for reading all that, and any help is much appreciated!
Installing CM into EMMC will erase every userdata and OS on it.
As long as you want to just store files on it, you can go and get the 64GB one.
My experience with those classes are that, that Class 10 is only fast for big continously written files like videos or songs in high quality.
Lower classes or non classified ones are often MUCH faster at tiny to medium sized files with much access on different adresses.
Backup everything, do a backup via SD recovery, then make factory reset via SD recovery and install CM10.1 plus GApps.
I am a HD+ owner since today and I have chosen to go directly to CM10.1 stable emmc, because I already had experience with SD ROMs from my old HTC HD2 (RIP) and I hated the lags and everything...
(I hate every vendor made bloatware that is stacked onto Android...)
The only thing I can say after my first day with vanilla CM10.1 is, THIS TABLET+PRICE+CM10.1 = AWESOME :laugh:
Hello,
I hope you're well, and I hope you're enjoying your Nook. Installing CyanogenMod on the Nook was the best thing I ever did (at the time Stock didn't have Google Play), so I hope you too enjoy CM.
Personally I do believe that installing CM10.1.3 (stable) on EMMC for general usage is the best way to go. I'd avoid CM10.2 for now, until a RC or stable version is released.
If you're running CyanogenMod (CM) on EMMC, there should be no problems at all as regards to what SD card you use. The storage size or class should not matter when on EMMC; although higher class is tied with better performance. The whole best SD card to use is 4GB class 4 arose when we didn't have the EMMC method of installation; back then we used to boot/install the whole CM on the SD card. Now, I don't think your SD card is as important - anything is a go, after all you're using it for storage only.
If you do go Hybrid or Pure, yes a class 4 SanDisk SD card is best. 4GB is also recommended, but you can go higher if you desire. If you do install on SD card, I'd recommend going Hybrid and not Pure. Out of the two, I'd just go EMMC (EMMC > Hybrid > Pure). However, if you do install on EMMC, everything will be erased on your internal; this includes your stock ROM, and all data/apps. You will however have all your B&N books saved on the B&N cloud.
All the best, any more questions please feel free to ask.
Jann F said:
THIS TABLET+PRICE+CM10.1 = AWESOME :laugh:
Click to expand...
Click to collapse
I back this statement.
Thanks for your replies guys!
You pretty much cleared up any confusion/questions I had regarding this. Pretty sure I'm going to just do EMMC. Plus even with the GooglePlay on the Nook now, I still have a lot of games that aren't compatible or are from Humble Bundles, so I don't think I'll have much use for stock.
One more question and I'll leave you guys alone. I have a USB MicroSD card reader I got somewhere years ago. Am I to assume the newer microsdcards won't work with this? I'll have to keep an eye out for a good deal on both. Thanksfully black friday is only a month away in the US :laugh:
elektrokuter said:
I have a USB MicroSD card reader I got somewhere years ago. Am I to assume the newer microsdcards won't work with this?
Click to expand...
Click to collapse
Haha, no problem at all! We're glad we could help.
Regarding your MicroSD card reader; it shouldn't be a problem, as SD cards haven't changed over the years - only the storage capacity. As long as your card reader can read MicroSD cards, and can write to them, you should be good to go. Of course however, I don't know what card reader you have, so there could be problems. I'm assuming it should be safe though.
All the best.
HiddenG said:
Regarding your MicroSD card reader; it shouldn't be a problem, as SD cards haven't changed over the years - only the storage capacity. As long as your card reader can read MicroSD cards, and can write to them, you should be good to go. Of course however, I don't know what card reader you have, so there could be problems. I'm assuming it should be safe though.
Click to expand...
Click to collapse
Nope, SD-Card Readers aren't compatible with SDHC/SDXC Cards as there are some differences.
SDHC-Cardreaders are compatible with every type.
SD-Reader --> SD -/-> SDHC/XC
SDHC/XC-Reader --> SD --> SDHC/XC
SD-Card = <4GB
SDHC-Card = >=4GB to 32GB
SDXC-Card = >=64GB to 2TB
Jann F said:
Nope, SD-Card Readers aren't compatible with SDHC/SDXC Cards as there are some differences.
SDHC-Cardreaders are compatible with every type.
SD-Reader --> SD -/-> SDHC/XC
SDHC/XC-Reader --> SD --> SDHC/XC
SD-Card = <4GB
SDHC-Card = >=4GB to 32GB
SDXC-Card = >=64GB to 2TB
Click to expand...
Click to collapse
Thanks for the info! This is the specs of the card reader I have
"Versatile — 9-in-1 USB card reader that works with SD, SDHC, MMC, MMCplus, MMCmobile, RS-MMC, microSD, and miniSD, MMCmicro"
Seeing as it lists the SD and mircosd compatibilities separate, am I right to assume it cannot read the micro sdxc cards I am going to need?
elektrokuter said:
Thanks for the info! This is the specs of the card reader I have
"Versatile — 9-in-1 USB card reader that works with SD, SDHC, MMC, MMCplus, MMCmobile, RS-MMC, microSD, and miniSD, MMCmicro"
Seeing as it lists the SD and mircosd compatibilities separate, am I right to assume it cannot read the micro sdxc cards I am going to need?
Click to expand...
Click to collapse
As it supports SDHC, your reader should be good to go with microSDHC cards.