Database Users

[Q] Access to bootable sd card from stock OS after 1.4.1 update

I have a nook color with dual boot from sd card. The sd card having an android 3.0 version.
After I got the 1.4.1 update, I noticed that I was able to access the sd card( the boot partition alone) from the stock OS boot of nook.
But now, dont know how, I dont see that anymore.
Was this a flawed update that was fixed or am I missing something.
Do help please.
I could really use the advantage of using the bootable sd card as a regular storage card when using the stock OS of nook. I prefer reading on the stock OS of nook.

Not sure why you're not seeing the SD card anymore, does it still boot?
SD card installs create multiple partitions on the SD card and the Nook will only be able to access the first one (boot). It should be accessible with any version of the Nook default OS.
You should have a media partition with a decent amount of room (1-5gb depending on NC version). That would give you more room than the 100-or-so mb on the boot partition.
Just found out that you can point the emmc install to see the "sdcard" partition of the sd card using the following info:
racks11479 said:
use root explorer and edit vold.fstab to "4" instead of "auto" for sdcard mount
Click to expand...
Click to collapse

Yes, I can boot from it. Every time I plug in the SD card, the notification already says that it is safe to remove the SD card. In the device Info part of the setting, the "Unmount SD card" is already greyed, though it does say that the SD card is found.
It is however useful for me to know that the boot partition should always be accessible.
I did remove the SD card a couple of times without unmounting it first, could this possibly have corrupted the card?

srn_28 said:
Yes, I can boot from it. Every time I plug in the SD card, the notification already says that it is safe to remove the SD card. In the device Info part of the setting, the "Unmount SD card" is already greyed, though it does say that the SD card is found.
It is however useful for me to know that the boot partition should always be accessible.
I did remove the SD card a couple of times without unmounting it first, could this possibly have corrupted the card?
Click to expand...
Click to collapse
Try to boot the uSD card (the one with Android 3.0 on it) and see what happens.
If it can, then it's good, if not, you can say it's corrupted.

Yes, I can boot from it. So I assume the card is OK
I plugged in other uSD cards and they get recognized fine. So I assume the Nook stock OS device recognition is OK.
I should probably recreate the boot partition as a last ditch effort

I had the same problem at first, but now I have mounted the correct sdcard partition that I wanted to mount.
I couldn't get it to work with editing the vold.fstab file at first. Then at some point after I manually mounted the correct partition through adb shell and edited the vold.fstab it now works.

[Q] Dual boot sd situation

Would appreciate some guidance, if anyone can help...
In December we got two new Nook Color Devices, one had 1.2 and the other 1.3. Had one 8gb micro sd card, and without understanding much about it, I followed verygreen's instuctions to create a card for dual booting. The 1.3 machine was used for installing cm7 (7.10) and the latest gapps file. But the card was then removed from that unit and inserted into the other Nook Color which had 1.2 in its firmware. I now think this was improper but am unsure what the repercussions were.
The system was used succesfully for several weeks. Occasionally the Nook side was booted from menu. Then suddenly after a cold boot, CM7 started but the virtual sd card was not recognized. Removed the card from the unit and investigated using Windows XP and Minitool Partition Wizard and found the "CM7 SDCARD" partition was corrupted. I reformatted that partition in Minitool, and then used the card for about another week in the 1.2 NC. At that time multiple partitions on the card suddenly became corrupted and fearing the sd card itself was defective I ordered some higher quality sd cards (now have 4 8gb sandisk class 4 cards to play with). Meanwhile the 1.2 NC accidentally booted into the Nook side with wifi enabled when it was charging and updated itself to 1.4.1. Before receiving the new sd cards, I reformatted the possibly defective sd card and recreated dual boot system using Verygreen's instructions (in the 1.3 unit but transferred into the 1.2 unit after creation). I was able to restore some of the apps using Titanium (but only because I had copied some of my original backups to my pc)
The unit with 1.3 on it had not been used much with wifi, and it still had/has 1.3 on it. One of the new cards is now in that NC (created as before with the Verygreen instructions).
I'm in a quandary what to do with the other unit.
Could using the 1.3-created sd dual boot card in the 1.2 Nook have caused partitions to become corrupted?
Where are applications going? Doesn't look like they're in the large sd card partition. I didn't think I had that much on there, (just some free apps from google and amazon) but I might I have run out of space? I never elected "move to sd card" or "clear cache" for any apps and don't know if that is a requirement when you use dual booting.
I haven't found instructions for what to do to create a dual boot card for 1.4.1. My original 8 gb card is in the unit, but I'd like to create a new boot card using the higher quality medium. Just want to understand what's happening. Is use of a 1.3-based card bound to lead to more corrupted partitions? Any suggestions on how to create a reliable dual boot card for this unit?

Sherip said:
Would appreciate some guidance, if anyone can help...
--- SNIP ----
I'm in a quandary what to do with the other unit.
Could using the 1.3-created sd dual boot card in the 1.2 Nook have caused partitions to become corrupted?
Where are applications going? Doesn't look like they're in the large sd card partition. I didn't think I had that much on there, (just some free apps from google and amazon) but I might I have run out of space? I never elected "move to sd card" or "clear cache" for any apps and don't know if that is a requirement when you use dual booting.
I haven't found instructions for what to do to create a dual boot card for 1.4.1. My original 8 gb card is in the unit, but I'd like to create a new boot card using the higher quality medium. Just want to understand what's happening. Is use of a 1.3-based card bound to lead to more corrupted partitions? Any suggestions on how to create a reliable dual boot card for this unit?
Click to expand...
Click to collapse
Can't tell you what issues you may be having with the sd card, but verygreen's "dual boot" (it's not really dual boot, but that's another story) method is independent of the stock rom (1.2, 1.3, 1.4, whatever). When you boot to the sd card, everything needed is on the card. When you boot to the Nook, either by using the sd card menu or removing the card, you get whatever stock ROM is currently installed in the emmc. If you properly created the sd card, you can insert it in any NC and use it.

I read through all and by the end, I'm lost
Anyway, if you are dealing with verygreen's uSD cards, you should be all set and not to worry anything on the eMMC. It's independent.
As why those partitions corrupted, I don't know as I never hit that problem. Just curious, why do you say it corrupts?

votinh said:
I read through all and by the end, I'm lost
Click to expand...
Click to collapse
Oh well, if no one else has had the issue of sd card corruption hopefully its not a side effect of using verygreen's image together with cm7 7.1.0, google apps and user apps.
Anyway, if you are dealing with verygreen's uSD cards, you should be all set and not to worry anything on the eMMC. It's independent.
As why those partitions corrupted, I don't know as I never hit that problem. Just curious, why do you say it corrupts?
Click to expand...
Click to collapse
The behavior was a little different each time. Has happened 3 times now.
Once it totally locked up. Powered off and back on. Got my home screen with icons but in the notification area an image of the sd card persisted for maybe 5 minutes while the unit was otherwise locked up. Finally the sd card image cleared, but es file explorer empty sdcard. When tested on the PC, that partition's data was corrupted. Recovery (using pc software) retrieved a bunch of files but without their proper names. That time my apps were not destroyed. I didn't have to redo verygreen's procedure, just reformatted CM7 SDCARD partition.
Another time I had powered off. Restarted and it booted in Nook instead of CM7. Removed the card and tested on the PC and both the boot and CM7 SDCARD partitions were unreadable. Didn't attempt any recovery. Wiped out and reformatted the card, then redid the verygreen procedure on it.
The third time (last night ) was more similar to the first time. I got some forced closes and couldn't get back the status bar. Rebooted. Got the sdcard icon showing for about 5 minutes. When it cleared, my files were inaccessible. Removed the card and tested on the PC. CM7 SCDARD partition content was corrupted.
The (bad?) sd card didn't give any errors when tested prior to the break downs. Its labeled as a sandisk 8gb class 2. Was a gift.
I'm back up and running after redoing the verygreen procedure using one of the new sandisk 8gb class 4 cards. This time I actually used my unit instead of another to do the unpacking/recovery loading of cm7 and google apps. I've never applied any of the nightlies. Maybe I should look into that. Also have never deliberately done any other procedures, such as overclock it.
Praying the corruption issue doesn't hit me again. I guess my NC's internal flash drive could possibly be defective. If so, at least its still under warranty.

[Q] Android ICS Rom + SD Card

Hello all.
HSPL4>HSPL 2.08
MGLDR
NAND HD2O_WP7_1.26_LEO71_8107_
SD NexusHD2-ICS-CM9-SD_v1.3
RADIO Leo_Radio_2.15.50.14europe.nbh
I started to play around with the sdrom today but when i try to download app/take a photo.
No sdcard is found. Do i need to set up a ext3orext4 on the sd card?? Would the rom just find the ext3orext4 dir?? Whats the best method

You just need to have your SD card partitioned for WP7 and Android. Since the ROM is running off the SD card, I'd assume it should regconize it right away. Try a reboot if you haven't, or mounting SD card in settings if it shows it as being there, but not mounted [ I doubt it, but it's worth looking at].

Its strange, in storage under SD CARD it says 'insert an SD card for mounting'
WHEN, its got to be inserted, as the ROM is running on the SD Card partition. It shows over a 1GB of space in internal storage? Think i will try a fresh install of the Android ROM. WP7 is running fine.
Sent from my Transformer TF101 soon to be ICS using Tapatalk

Going to install a cwm partition which matches rom, i think this will fix the issue.

AudioFiend said:
Its strange, in storage under SD CARD it says 'insert an SD card for mounting'
WHEN, its got to be inserted, as the ROM is running on the SD Card partition. It shows over a 1GB of space in internal storage? Think i will try a fresh install of the Android ROM. WP7 is running fine.
Sent from my Transformer TF101 soon to be ICS using Tapatalk
Click to expand...
Click to collapse
I don't know why you are getting issues with photos and stuff, but your SD ROM is running fine. Android SD cannot mount the SD card as Android is running off the SD card. The 1gb internal storage is the data.img file in the 'Android' folder which is read as your internal storage by Android. I wouldn't mess around with CWM, it won't solve anything for SD Android and may result in you deleting WP7 if I'm not mistaken (but if you already have CWM installed then I am very much mistaken)

Not sure if it helps, but did you set both WP7 and Fat32 partitions as "Primary" when you set up the card? (use minitool partition magic)

[Q] Running CM7 off NAND - anything to consider changing SD Card?

Hi all.
I was given an HD2 running CM7 off NAND. It has a 2gb SD card in there, with around 400mb as ext3/ext4 partition.
I want to swap the 2gb for an 8gb card. Having not installed the ROM myself (and am not too familar with the process on the HD2), I'm unsure how to proceed.
Are there any files on the SD card that are likely to be needed for booting?
Can I just stick the new card in, use recovery to partition it and then remove the card - copy the old ext3/ext4 partition data over and it'll be happy?
Do I need to use recovery, can I just a Linux box to do that instead?

mr_arc said:
Can I just stick the new card in, use recovery to partition it and then remove the card - copy the old ext3/ext4 partition data over and it'll be happy?
Do I need to use recovery, can I just a Linux box to do that instead?
Click to expand...
Click to collapse
assuming you don't have a linux pc that can read ext partitions, id do it this way..
into cwm - full backup.
2gb card into card reader (or mount usb storage in android - or 'mounts and storage - mount sd card' in cwm) - copy off your whole fat32 partition - make sure you have hidden files set to show in windows explorer.
8gb card into phone, back into cwm, create the new ext partition.
8gb card back into card reader (or mounts and storage - mount sd card in cwm) and copy the fat 32 stuff back to the card.
into cwm - restore - advanced restore - restore the sd-ext partition only.

Thanks for the reply.
I do have a Linux PC to hand, and the HD2 doesn't have CWM on it.
So in the end, I used GParted to create a partition table that looked like the existing card and then copied the contents of the old card over. Phone booted up fine

[Q] SD card partition problem

So I am running CM7 off of an sd card in my nook color.(Using http://forum.xda-developers.com/showthread.php?t=1904129 and I highly recommend). Win32discimager for some reason created a small partition just larger than the installer which remains on the card. I also have the android OS on the card that is taking up 1 gb partition. The rest of my 16gb micro sd card is labeled as the emmc for the tablet which is not what i intended. Now I cant load it up with my movies and videos like I had hoped.
Does anyone know:
Is there any way I can change these partitions on my card? (I have already tried EasuUS partition manager)
Where did the 1gb partition that android is on come from and why did the emmc get so large?
Is there any way to take the android image currently on my sd card and just putting onto the nook after I have already had it run from the sd card and then just formatting my sd card for storage?
There are probably newbie questions but I have tried to do my own research and havent found any certainties. Any help would be really appreciated.

posturize said:
So I am running CM7 off of an sd card in my nook color.(Using http://forum.xda-developers.com/showthread.php?t=1904129 and I highly recommend). Win32discimager for some reason created a small partition just larger than the installer which remains on the card. I also have the android OS on the card that is taking up 1 gb partition. The rest of my 16gb micro sd card is labeled as the emmc for the tablet which is not what i intended. Now I cant load it up with my movies and videos like I had hoped.
Does anyone know:
Is there any way I can change these partitions on my card? (I have already tried EasuUS partition manager)
Where did the 1gb partition that android is on come from and why did the emmc get so large?
Is there any way to take the android image currently on my sd card and just putting onto the nook after I have already had it run from the sd card and then just formatting my sd card for storage?
There are probably newbie questions but I have tried to do my own research and havent found any certainties. Any help would be really appreciated.
Click to expand...
Click to collapse
Ok, first you need to go to my tips thread linked in my signature and read in section B how the verygreen SD works. You will understand the partition structure a little better.
Now for your sdcard/emmc media storage problem, you have a setting wrong in CM7. Go to settings, CyanogenMod settings, Application and uncheck "Use internal storage". What that setting does is swap emmc and sdcard so that your real sdcard is called emmc and internal media storage is called sdcard. It is not default that way. Somehow it got checked.
Sent from my Nook HD+ using Tapatalk