Sorry if this is a n00b question... but I've been able to unmount and remount the SD card in my HD2, or connect it to my computer via USB (which unmounts it on the phone side), all while running Android from that same card.
I'm wondering if this is safe to do, or if the only "safe" method is shutting down Android and rebooting into Windows Mobile. After all, the 1GB data.img and the Android system are both kept on the card, so if it is unmounted, you'd think the system would crash or otherwise corrupt data...
Thanks.
nookkin said:
Sorry if this is a n00b question... but I've been able to unmount and remount the SD card in my HD2, or connect it to my computer via USB (which unmounts it on the phone side), all while running Android from that same card.
I'm wondering if this is safe to do, or if the only "safe" method is shutting down Android and rebooting into Windows Mobile. After all, the 1GB data.img and the Android system are both kept on the card, so if it is unmounted, you'd think the system would crash or otherwise corrupt data...
Thanks.
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Click to collapse
I do think the system would crash or be corrupted because if all the files are running from the SD card and then it is removed, then all files would not be accessible causing the system to crash or even worse - corrupt data. Whenever run it from the SD card and connect it to my computer I use the app called "Dual Mount SD" which allows me to still access my SD card (from my phone), which means the android files on the SD card can still be accessed by the phone for the system to still run. I believe this way is the safest.
I read somewhere that someone removed it and nothing happened, but take it from someone who tried it: Do NOT remove the card from the phone when it's running android. and unless the developer specifically says that it's safe to connect his build through diskdrive mode do not connect it that way as well!
I'm using the above mentioned program and it works fine. Music and other media files will be recognized by the music app only after you rescan the card using any free tool available (search the net/market for a tool to rescan the card on android) and that's all you need
Related
i have got HTC HD2 with android v 2.2.1.. every time i transfer a file on the SD card via usb, the phone does not recognize the file. i tried doing the same in windows 6.5 and it works.
Secondly, every time my phone restarts, it boots windows 6.5 whereas i have android installed. how do i fix these issues???
It sounds like you are using a Service card Android build. When you reboot your HD2 from a SD card build it is suppose to boot back into Windows Mobile cause that is what is in the actual internal memory of the phone, which the internal memory is what the SOL of the bootloader is programmed to boot up. To have Android boot up from SD card on it's own house need to install a dual boot app, just Google "Dual Boot Apple for Windows Mobile" or go the the HD2 Windows Mobile themes and apparently forum and do a search there.
If I am not mistaken to have been your SD card work properly as a mass storage device when connected to a computer you have to have USB. Debugging on. To do this while in Android go to Settings>Applications>Development and check USB Debugging.
If you're using an SD build it's known that SD builds restart to WinMo, you shouldv'e read it somewhere by now.
Files transfered to the Card on android are not recognised unless you restart the phone or transfer them when you're on WinMo, also transferring the files to an SD android version using diskdrive mode means you're risking braking the build or corrupting your SD card, it can be fixed with either scanning your card for system file errors or formatting it in worst case scenario..
anyway, the safest way to transfer files to SD while plugging your SD android over the USB is by using the Dual Mount SD app, the speed is a bit decreased, but the device will recognize them when you unplug it.
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
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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?
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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.
OK, something weird just started happening. For some reason, my Win 7 PC will not display the contents of my micro sd card when I connect my A500 to my pc. My pc recognizes the connection as soon as I plug it in, the dialog box asking if you want to open the folder comes up, all of the files on the internal sd partition are viewable, but when I click on the ext sd card it opens and nothing is displayed. I took the micro sd card out of the a500 and put it in a usb reader and everything was fine. All files were there and accessible. I even ran checkdisk on it and defragged it. I stuck it back in the a500, rebooted, and connected it to the pc and still nothing is displayed when I click on the sd card. This wouldn't be a big deal but now it makes it real difficult to move any files to my a500 from my pc. I have to copy it to internal memory and then move it to the ext sd using a file manager on the a500. If anyone knows of a solution please chime in.
My a500 is currently running a stock rooted 3.2.1 with all the latest updates installed.
cruise350 said:
all of the files on the internal sd partition are viewable, but when I click on the ext sd card it opens and nothing is displayed....
I stuck it back in the a500, rebooted, and connected it to the pc and still nothing is displayed when I click on the sd card. .
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Click to collapse
I had similar problem to u except I only had internal storage showing on PC. You can try this - Remove micro sd put it in a usb reader and transfer any file to it, I just used an apk, put it back in tab, connect USB to PC, uncheck USB debugging and you should have access to both internal and external sd.
The weird thing is i'm sure i never had to disable USB debug before I could see external contents. In Device Manager under Portable Devices if USB debug is checked my tab shows up as "MTP" and will not show in win exp. If I uncheck it then it shows as "Acer ICONIA TAB A500" and I can access . Can anyone tell me if this is normal behaviour??? I'm running rooted stock 3.2.1/Win 7. thanks
I had similar problem with no external SD card display when I connected my tablet. Recently, I updated the Android SDK and all of a sudden, my PC displays the external SD card. I am currently using rooted Honeylicious 3.2.1 with the latest recovery RA 3.14
taodan said:
I had similar problem with no external SD card display when I connected my tablet. Recently, I updated the Android SDK and all of a sudden, my PC displays the external SD card. I am currently using rooted Honeylicious 3.2.1 with the latest recovery RA 3.14
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Click to collapse
I'll try that, I am running the exact same thing. I have run several roms before going back to stock rooted and I believe the stock rooted was displaying it properly. I can't think of what might have changed on my computer but I will hunt down the android sdk and download it and see if that changes. I have tried several different drivers for the acer with no improvement.
Similar Issue
I have a similar issue. The Music folder doesn't show up, but all the other folders and files are available.
I noticed when I select properties of the sd card in windows explorer it says under file system: Generic Hierarchical. What the hell is that?? Shouldn't it say FAT32?? Also, up on the top or the windows explorer windows when you have details selected under view it has Name, type, size, track number, and artist as the headers. Luckily, I backed up the sd card the other day to my computer so I'm going to take the sd card out and format it and copy everything back and see if that fixes it.
Anybod work out how to fix it I am using stock 3.2.1 and contents of external sd not visable from pc. Internal sd shows contents no problem.
I Think this is a issue due to the original format of the sd card. I to had a similar issue.. I copied everything off the sd card into my pc to back it up.. then put the card into my android phone and formatted it.. Put card back in win7 pc copied files back to card then put it back in the tablet.. CONNECTED usb cable and all is well.. this was months ago. The issue started all at once for me as well. And i do know the card was originally formatted in my pc... This was talked about alot with flashing rom issues as well as not seeing card thru adb..
This is worth a try .. LET me know if it work or not..
Erica Renee.. the BLONDE ANDROID CHIC WATCHING OVER YOU..
no, didn't work for me erica - the weirdest thing is I can see everything fine from my win7 laptop but not on my win7 desktop - until I disable USB Debug then everything is fine??? I think my issue is drivers - i'm loathe to change them tho as it took forever to get ADB working successfully and not too much of a prob to disable USB debug - it would be nice if someone was able to come up with a definitive solution tho
acer uses mtd in order to sync your data. It also allows you the tablet to continue using the internal memory while allowing access to it at the same time. If you are to change it from mtd to a regular drive then the Acer sync will not work and you will lose access to the memory from the tablet while connected to PC.
I believe I read the sdcard slot was only there to allow you to copy items to the tablet. Maybe they changed it with a early update.
When it is in mtd mode the system does not see the memory directly. That is why you do not see fat32. Just Google mtd storage and you will understand.
Been booting cm7 off the same sd card for a long time, but now when booted from this card it refuses to scan for or connect on wifi. Wifi works fine when booting to stock as well as off an older clone of the boot system from another sd card. I had several force closes last night in xfinity mobile app I think might be responsible. Think I finally powered off during one of them.
I've tried numerous reboots, enable/disable wifi, removed the network, etc., no joy. Also tried booting to recovery on the sd card, hoping by clearing caches it would magically again start working.
Any suggestions to sucessfully reenable wifi on the main card?
On it I have titanium backups on the sdcard partition which I don't know how to access on my pc (i.e., without wifi) for purposes of copying and making available to another sd card. Best I can do is see the boot partition from a usb reader on my Windows XP USB reader.
Sherip said:
On it I have titanium backups on the sdcard partition which I don't know how to access on my pc (i.e., without wifi) for purposes of copying and making available to another sd card. Best I can do is see the boot partition from a usb reader on my Windows XP USB reader.
Click to expand...
Click to collapse
Just connect your USB cable and choose to 'Turn on usb storage'. Your PC will see the SD media partition to copy the tibu backups.
Sent from my Nook Color running ICS and Tapatalk
Thanks, at least now I can now transfer over the titanium backups for apps and data, and other miscellaneous files from the sd card partition. Before I reformat the old card, do you know if/how I can capture the various wifi network ssids and pass keys I had?
Edit: Still would be good to know, but it turns out all my networks of interest are already on the older sd card.
The problem started a few weeks ago, and I can't remember if it's related to any update I might have done.
I first noticed there was a problem when the camera app couldn't save my pictures/videos to the SD card and reverted to using internal memory. Then I started having issues with some applications who wouldn't update claiming they were unable to install to USB storage or SD card. I was able to circumvent that by temporary unmounting the card then performing the update.
It's when I tried to copy some media onto the card from my computer that I realized I no longer had writing privilege on the card. I popeed it out and added the files without any issue from a microSD card reader so at least I knew the card was OK. After a little bit of fiddling, I was able re re-mount the card as read-write when trying to write on it from within Total Commander. It offered to remount as read-write and I said yes. Problem is, it stays that way for a little while and a few hours later, I can no longer write anything on the card, again.
Does anyone knows how to permanently fix this issue?
I'm currently using stock Samsung firmware build number JDQ39.I337MVLUAMG1 and the phone is rooted.
If you take it out and put on your (Windows) PC, how does it perform?
If you have Windows, does a scan disk report anything wrong?
I could read and write to the card without any issue from Windows when using it through an USB reader.
Scanning the card found a bunch of file system errors. Once corrected, the card mounted back correctly on the phone.
Thanks for the tip!