SDcard Issue... - Touch CDMA Android Development

Can someone explain how I can delete a file from the SDcard, yet still see it and open it on my drive in Windows? Also, why can't I see files placed on my SDcard from Windows until I reboot my device...
I created this script in attempt to fix the second issue, I think it works okay most of the time... Issue arise only if it can't unmount /sdcard successfully.
Code:
umount -f /dev/block/mmcblk0p1
mount -o rw,noatime,nodiratime,fmask=0000,dmask=0000,iocharset=iso8859-1,flush -t vfat /dev/block/mmcblk0p1 /sdcard

Related

apps2sd reboot loop

hi everyone,
***i searched and searched but i couldnt find the answer***
i had apps2sd on a previous rom and i recently switched to the mytouch rom.
after i wiped and applied update, i get stuck at the boot loop. i know that this is caused by the apps2sd and i remember seeing a set of commands that erase it from the sd card but it was deep in a thread and i dont remember which thread it was.
can someone please help me ( and others) out by posting the commands that will get it past the boot loop?
i tried this in the recovery console but it didnt work:
mount data
ln -s /system/sd/app /data/app
Thanks guys!
also tried this but it didnt work:
mount data
rm /data/app
mkdir /data/app
im still stuck on boot loop
Code:
mount -o rw /dev/block/mmcblk0p2 /system/sd
cd /system/sd
rm -r *
slyfury said:
also tried this but it didnt work:
mount data
rm /data/app
mkdir /data/app
im still stuck on boot loop
Click to expand...
Click to collapse
mount -o rw /dev/block/mmcblk0p2 /system/sd
cd /system/sd
rm -r *
does that delete everything on the sd card?
this gives me an invalid argument error:
"mount -o rw /dev/block/mmcblk0p2 /system/sd"
i can get to
/system/sd #
when i type in cd /system/sd
?????what do i do???
slyfury said:
mount -o rw /dev/block/mmcblk0p2 /system/sd
cd /system/sd
rm -r *
does that delete everything on the sd card?
this gives me an invalid argument error:
"mount -o rw /dev/block/mmcblk0p2 /system/sd"
i can get to
/system/sd #
when i type in cd /system/sd
?????what do i do???
Click to expand...
Click to collapse
said what the hell and tried the rm command and i got permision denied on everyfile it tried to erase
easiest way would be to reformat your ext partition.
then wipe and reflash
other roms can leave junk in the ext partition that causes bootloops quite often. this is a very common problem and i always find a reformat, which takes like 30 seconds with gparted live cd, fixes it
is there a way to do it through the phone?
my micro sd adapter broke and im waiting for amazon to send my a new one
found it:
http://forum.xda-developers.com/showthread.php?t=534714

Is there a way to make apps use /sdcard/ApplicationData rather than /sdcard ?

Is there a way to make all applications store their data in a folder other than /sdcard (root folder on the sd card) ?
I'm planning on rooting and thought that this time round I can keep my sdcard nice and organized by creating an "ApplicationData" folder in the root of the sdcard and somehow configuring android to use that.
On a similar note, can I move the DCIM (camera photos) to a different location too?
Will the below change-mount-point idea work?
Maybe as root we can
1) un-define /sdcard (in /etc/fstab) //or wherever its defined
2) define /sdcard as /dev/<hdb0>/ApplicationData //change hdb0 to the appropriate device/partition
thanks.
Yeah, I see your point... but quite frankly, I believe it's upto the app developers [my knowledge of the Android world is still from the stone-age!!]... if the app specifies that it's data will be stored in /sdcard/AppName, there's not much you can do, unless you can modify the app...
I was thinking that maybe as root we can
1) un-define /sdcard (in /etc/fstab) //or wherever its defined
2) define /sdcard as /dev/<hdb0>/ApplicationData
edit: added to post#1
britoso said:
I was thinking that maybe as root we can
1) un-define /sdcard (in /etc/fstab) //or wherever its defined
2) define /sdcard as /dev/<hdb0>/ApplicationData
edit: added to post#1
Click to expand...
Click to collapse
I did think of this too...
/sdcard --> /sd/AppData
rest of sd card --> /sd
but I think it would mean some other changes as well... for example... the mount usb functionality would have to be modified to mount/unmount a different volume...
So heres the contents of my fstab file:
Code:
C:\>adb shell cat /system/etc/fstab
/dev/block/mtdblock3 /system yaffs2 rw
/dev/block/mtdblock4 /cache yaffs2 rw
/dev/block/mtdblock5 /data yaffs2 rw
/dev/block/mmcblk0p1 /sdcard vfat rw
/dev/block/mmcblk0p2 /system/sd auto rw
/system/modules/modules.sqf /system/modules squashfs ro,loop
/system/xbin/xbin.sqf /system/xbin squashfs ro,loop
I'll try changing line 4 (/sdcard), I'm guessing /system/sd is for when I apps2sd is enabled.
Question: How do I escape from INSERT/EDIT mode in VI? Tried pressing trackball+1, trackball+1+2...didnt work
Hey britoso!
Keep us updated with your accomplishments. I, personally, am very interested in being able to achieve this.
Good luck!
update: that didnt work.
Note: the way to get the ESCAPE character is CONTROL + [ (hold the trackball then press [ ). The control key is configurable and defaults to the Jogball/TrackBall
here are the contents of my fstab file, the camera app is still writing to the root of the sdcard (/sdcard/DCIM)
Code:
C:\>adb shell cat /system/etc/fstab
/dev/block/mtdblock3 /system yaffs2 rw
/dev/block/mtdblock4 /cache yaffs2 rw
/dev/block/mtdblock5 /data yaffs2 rw
/dev/block/mmcblk0p1 /sdcard/AppData vfat rw
/dev/block/mmcblk0p2 /system/sd auto rw
/system/modules/modules.sqf /system/modules squashfs ro,loop
/system/xbin/xbin.sqf /system/xbin squashfs ro,loop
Heres the output of "df"
Code:
C:\>adb shell df
Filesystem 1K-blocks Used Available Use% Mounted on
tmpfs 197600 0 197600 0% /dev
tmpfs 4096 0 4096 0% /sqlite_stmt_journals
/dev/block/mtdblock3 148480 100088 48392 67% /system
/dev/block/mtdblock5 200960 63752 137208 32% /data
/dev/block/mtdblock4 97280 39628 57652 41% /cache
/dev/block//vold/179:1
15643712 6843256 8800456 44% /sdcard
@britoso
This is what I found out about mounts in Android...
The init program directly mounts all filesystems and devices using either hard-coded file names or device names generated by probing the sysfs filesystem (thereby eliminating the need for a /etc/fstab file in Android).
And from what I see in your df output, it didn't mount /sdcard/AppData...
Have a few ideas in mind... gonna try 'em out now...
craigacgomez said:
gonna try 'em out now...
Click to expand...
Click to collapse
thanks for the info. Let us know how it works out.
Here's what I reached finally...
To achieve this, I have 2 ideas...
1. We gotta modify the init and change the SD mount point to AppData and add another for the rest of the SD... this however would require a rebuilt ROM (I can't edit init on the phone, need to edit init.c from the source)
2. We push some startup scripts to achieve this, but so far, I haven't been able to mount anything else on /sdcard (operation failed), but I think I'm doing something wrong...
Didn't get much time to experiment... and it mite be a busy end of week for me... but I'll try to squeeze in so time to get this...
Why not ask Cyanogen to do this for us in his next ROM?
Or your next favorite modder?
I'm sure they'll like this idea!?
theres a setting in /init.rc that may help
Code:
export EXTERNAL_STORAGE /sdcard
However / is mounted read-only
mount
rootfs on / type rootfs (ro,relatime)
Click to expand...
Click to collapse

[Q] Hello there have some problems with moving system files

Hi i moved some files from system/app into the sd card to get some space so i could use the metamorph app but i didnt work so i was going to move back the files from the sd card to system/app but now they wont move there anyone know a soloution how to do this?
thanks in advance
system is readonly
you must do an
adb shell
mount /dev/block/mtdblock3 /system
then you can fool around with your system apps
mount /dev/block/mtdblock3 /system || I wrote that but it says
"mount: mounting /dev/block/mtdblock3 on /system failed: Device or resource busy"
i rooted my phone yesterday quite knew to android and i have no clue what to do
You are doing that in recovery mode right?
I tried in ClockworkMod Recovery v2.5.0.1 but it says Device or resource busy :/ have no clue.
ClockworkMod has a nice green menu on screen from where you can see (partitions menu) which partitions are already mounter and which are not.
You can also do adb shell and run "mount" in it to see which partitions are mounted and in what way. ClockworkMod has /etc/fstab so you can mount system just by running "mount /system". If system is already mounted, you can cd to /system/app and try "touch test". If you get permission denied then your system is mounted read-only otherwise you will see test file in /system/app if you run "ls".
I did adb shell and did run "mount" and it says /dev/block/mtdblock3/ on /system type yaffs2 <ro>
I downloaded a app called root explore and the main reason for that was so i could move some files from system/app so i could get some free space so i could use metamorph that was my plan and i moved some files i have eard you could move that wouldnt harm anything but it wasnt enough free space, so my plan was to move back the files i had moved into the sd card some went great but i have like 4 files that i cant bks it says "You cannot paste here because the file system is read-only" is there any other way to push those file into the system/app again? have tried the things u wrote up.
And im not a very pro of theese things i started with this yesterday so excuse me for being stupid!
This:
/dev/block/mtdblock3/ on /system type yaffs2 <ro>
...means that system is mounted read-only (mind that "ro" at the end).
Try running "mount -o remount,rw /system". If it doesn't help run "cat /etc/fstab" and post here the output. You need to be in recovery mode while doing this of course!
did "mount -o remount,rw /system" and it said mount: can't find /system in /proc/mounts
and the other one said
/dev/block/mtdblock4 /cache yaffs2 rw
/dev/block/mtdblock5 /data yaffs2rw
/dev/block/mtdblock3 /system yaffs2 rw
/dev/block/mmcblk0p1 /sdcard vfat rw
/dev/block/mmcblk0p2 /sd-ext auto rw
used my brain a little now and in the recovery settings i did mount the /system in the menu and now i tried to write cd /system/app and now in the cmd it is like this "/system/app #" anything useful?
Sure... as I already told you try to run "touch /system/app/test". This command shoud make empty test file in /system/app. If you get permission denied then you have read-only system. If it suceede, then your /system is writable and you can see all the contents of /system/app by runing "ls".
I wrote that and it wrote the same
"touch /system/app/test"
no permmission denied then it may have worked?
i checked and there is a testfile in /system/app now
I think i got it to work now thanks man for all your help!

[Q]: Read-only filesystem

Hi!
I have rooted my phone (LG Optimus 2X) and mistakenly deleted some files.
I have these files, and want to push them back using adb, put my problem is, that when i try to mount the system in read / write mode using "adb remount" i get this error: "remount faileded: Operation not permitted".
I can't figure out how to fix it, i can pull files etc.
I have also tried to use the adb shell, and copy the files from the internal sdcard, but i'm getting the same error.
Only read-mode.. :/
Anybody who can help, fixing this problem?
If you want to mount /system just write:
mount -o rw,remount -t yaffs2 /dev/block/mtdblock3 /system
Then you're good to go
How to unmount into read-mode only?
Thank! - You saved my day
mrhtml said:
How to unmount into read-mode only?
Thank! - You saved my day
Click to expand...
Click to collapse
A little easier to type...
Mount r/w
Code:
busybox mount -o,remount -rw /system
Mount r/only
Code:
busybox mount -o,remount -r /system
Edit: You shouldn't post stuff like this in dev

[Q] [HELP] Swap sdcard with sdcard-ext

I've edited vold.fstab so that sdcard and sdcard-ext are swapped. But this doesn't work on my XT894. Nothing happens in my case.
Then I found this topic.
In short, you run a script containing:
Code:
busybox mount -o remount,rw /
busybox mount -t vfat -o umask=0000 /dev/block/vold/179:97 /mnt/sdcard
busybox mount -t exfat -o umask=0000 /dev/block/vold/179:97 /mnt/sdcard
if busybox mount | busybox grep vold/179:97; then
busybox mount -o bind /data/media /mnt/extSdCard
fi
After running this script the result is that both sdcard and scard-ext are in fact pointing to my external 32GB card. So in a way I'm happy. Now I can install games and all navigational maps without any hassle. But, I would like my internal 8GB of storage back. To do so I take it "something" has to be mounted to /mnt/sdcard-ext.
My Linux/Unix is of n00b quality so here I am asking for help :cyclops:
I've tried adding these two lines:
busybox mount -t vfat -o umask=0000 /dev/block/vold/179:1 /mnt/sdcard-ext
busybox mount -t exfat -o umask=0000 /dev/block/vold/179:1 /mnt/sdcard-ext
Hoping 179:1 pounted to the internal sdcard and /mnt/sdcard-ext would mount it at exactly that. But it didn't work.
Can anyone explain to me what these commands do? Why vfat and exfat? Is this done so that you always mount the correct filesystem? And what about the vold/179:xx? Does anyone know which one points to the internal sdcard on an XT894 running ICS?
Trust me, I've Googled all I can. I have tried several options, multiple scripts, but my lack of Linux/Unix knowledge is killing me.
Edit:
When I connect as USB Mass storage I get my internal 8GB back. It is accessible on the laptop. When I switch back to MTP it shows a different directory (maybe due to vold/179:1 !?). After I re-run the script sdcard is back to my external 32GB. For now this will do.
I will update later. Sygic is downloading 2GB of data. After that I will switch back and forth between USB M / MTP with and without running the script.
Edit 2
After I connect as MTP, Internal Storage seems to be pointing to an unknown space. There is an .android directory which I am unable to find on the phone.
When I switch to USBMS (from MTP) it seems to switch back to the original setup, sdcard 8GB and sdcard-ext 32GB.
When I disconnect the USB cable everything is back to normal. But, all I need to do is re-run the script and sdcard points back to my external SD.

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