Develop Bugs

[Q] EXT4?

Is there any way to see if I have ext4 file system on my phone?

goto a terminal, or adb, and type mount...
the output tells what FS each partition is..

I think you could also do a nandroid backup. Mine looks for sd/ext4 and fails. I figure that's because I'm on an Ext4 Rom.

sd-ext is a swap partition, and used for the older apps2sd... nothing to do with ext4. most dont use sdext anymore though

chris41g said:
goto a terminal, or adb, and type mount...
the output tells what FS each partition is..
Click to expand...
Click to collapse
Thank you for your help. I did, but a whole bunch of stuff came up LOL....and being the noob than I am.....I have no idea what I'm looking at.... :/

xfilemanx said:
Thank you for your help. I did, but a whole bunch of stuff came up LOL....and being the noob than I am.....I have no idea what I'm looking at.... :/
Click to expand...
Click to collapse
In the terminal type the following
mount | grep ext4
This should show you only those partitions that are ext4
Sent from the communications console of the NX-01 using a universal translator

jarcher1971 said:
In the terminal type the following
mount | grep ext4
This should show you only those partitions that are ext4
Sent from the communications console of the NX-01 using a universal translator
Click to expand...
Click to collapse
thank you for your help
and thank you everyone for your patience with the noob

[Q] Can't mount sdcard in recovery

Hi,
I can't mount the "sdcard" when I'm in recovery, I just get an error like this: "Unable to write to ums lunfile"
I run the latest CWM on a Galaxy Nexus GSM.
What should I do to get this working?

I am having the same issue, if I try mounting usb storage or sd card I get "Unable to write to ums lunfile"
I'm using v5.0.2.7 and I want to know if it's the version of cwm or whether it's my phone.
Help please

The phone does not support USB mass storage., therefore it will not work.

joshnichols189 said:
The phone does not support USB mass storage., therefore it will not work.
Click to expand...
Click to collapse
so how can you flash roms.. ?

What? You use MTP to put roms on the phone.

hey people, i've lost some data (precisely a file .dat that was containing all my messages) and would like to recover it, but if i can't mount USB Mass Storage how can i recover this file? Is there an app that recovers from MTP and PTP devices? thanks very very much, it's really an emergency!

Is there any way to access the internal storage whilst in CWM?

Janzomaster said:
Is there any way to access the internal storage whilst in CWM?
Click to expand...
Click to collapse
NO. I found this out a while back. Because as stated above the Nexus uses MTP and not USB to connect it is not possible to see your internal memory in CWM.

jd1001 said:
NO. I found this out a while back. Because as stated above the Nexus uses MTP and not USB to connect it is not possible to see your internal memory in CWM.
Click to expand...
Click to collapse
So, if a solution arises, it would be from the side of CWM, right?

Janzomaster said:
So, if a solution arises, it would be from the side of CWM, right?
Click to expand...
Click to collapse
I don't think so. I think it would be Google would have to allow USB support. Then CWM would work.

jd1001 said:
I don't think so. I think it would be Google would have to allow USB support. Then CWM would work.
Click to expand...
Click to collapse
Couldn't CWM "just" enable MTP support in their recovery?

Janzomaster said:
Couldn't CWM "just" enable MTP support in their recovery?
Click to expand...
Click to collapse
Maybe dude but I don't think it is that simple!

Janzomaster said:
Is there any way to access the internal storage whilst in CWM?
Click to expand...
Click to collapse
If you mean the content of /sdcard:
Shure, boot into cwm recovery, mount data and you can find all your sd card/user data via adb under /data/media/.

gokpog said:
If you mean the content of /sdcard:
Shure, boot into cwm recovery, mount data and you can find all your sd card/user data via adb under /data/media/.
Click to expand...
Click to collapse
Doesn't work!

jd1001 said:
Doesn't work!
Click to expand...
Click to collapse
It does. I'm just looking at it. Get adb in recovery working and see for yourself.

I think they're saying it doesn't work in the traditional sense. ADB does work though, as shown above

gokpog said:
It does. I'm just looking at it. Get adb in recovery working and see for yourself.
Click to expand...
Click to collapse
Sorry got that wrong, I meant in the traditional sense! Thanks though good to know this.

EddyOS said:
I think they're saying it doesn't work in the traditional sense. ADB does work though, as shown above
Click to expand...
Click to collapse
You are right, mounting as UMS doesn't work. But Janzomaster later asked "Is there any way to access the internal storage whilst in CWM?", which you can (via adb).

Well, just hitting a button and you can access the files through the explorer would have been perfect. But adb is a good alternative to have

This litte app comes in very handy: https://qtadb.wordpress.com/
GUI for adb, including file explorer -> perfect for CWM recovery

Combining internal and external sdcards as one storage unit? Android LVM?

Basically what im getting at is would it be possible to combine both storage units to where the os can mount them as one? In traditional Linux I would use LVM2.

Anybody? You think something like this would've been done already but I haven't found any directions on Google just a project page.

dude, desktop computers require an entire card in order to do this kind of stuff, it's called raid, and android isn't programmed to support it
Sent from my SPH-L900 using xda app-developers app

That is incorrect. Try looking into what an LVM actually is before attempting to answer. RAID is something completely different.
Edit: not trying to be a **** but your post had a condescending tone to it.

schnowdapowda is correct, LVM would be able to do this just fine if Android supported it, but as far as I can tell the Android system doesn't have the kernel modules or systems in place sadly. Otherwise it'd be no problem making a physical volume from the two SD partitions, then a volume group and logical volumes.
One down side is you would run into system overhead while the slower SD card is keeping LVM from writing to faster on-board "SD card" partition space.
I just run the following at boot time, and it swaps the internal and external cards... Note this is with the Perseus kernel.
Code:
busybox mount -o remount,rw /
busybox mount -t exfat -o umask=0000 /dev/block/vold/179:49 /mnt/sdcard
if busybox mount | busybox grep vold/179:49; then
busybox mount -o bind /data/media /mnt/extSdCard
fi
I saw this on a website and it works perfectly, just need to verify your dev/block/vold/NNN:NN mount point and make this change after the SDCard is initialized.

aramova said:
schnowdapowda is correct, LVM would be able to do this just fine if Android supported it, but as far as I can tell the Android system doesn't have the kernel modules or systems in place sadly. Otherwise it'd be no problem making a physical volume from the two SD partitions, then a volume group and logical volumes.
One down side is you would run into system overhead while the slower SD card is keeping LVM from writing to faster on-board "SD card" partition space.
I just run the following at boot time, and it swaps the internal and external cards... Note this is with the Perseus kernel.
Code:
busybox mount -o remount,rw /
busybox mount -t exfat -o umask=0000 /dev/block/vold/179:49 /mnt/sdcard
if busybox mount | busybox grep vold/179:49; then
busybox mount -o bind /data/media /mnt/extSdCard
fi
I saw this on a website and it works perfectly, just need to verify your dev/block/vold/NNN:NN mount point and make this change after the SDCard is initialized.
Click to expand...
Click to collapse
How well does this work for you? And do you do this at every boot or only when you want to swap? Also when running apps after you swap the two and all of your other apps are already installed on internal then you swap the two, can you still just open the app drawer click and run? Or do they no longer run after the switch.
Also after the switch how does that all work when going into recovery and wiping directory's/folders etc and flashing ROM's what will it wipe since the directories are switched?

What is the benefit of swapping?
Sent from my SPH-L900 using xda app-developers app

Tw1sted247 said:
How well does this work for you? And do you do this at every boot or only when you want to swap? Also when running apps after you swap the two and all of your other apps are already installed on internal then you swap the two, can you still just open the app drawer click and run? Or do they no longer run after the switch.
Also after the switch how does that all work when going into recovery and wiping directory's/folders etc and flashing ROM's what will it wipe since the directories are switched?
Click to expand...
Click to collapse
Sorry i had forgotten about this thread. This shouldn't effect app storage. Only SD storage and the mock SD storage partition on your internal memory. I believe it might screw up any apps you have installed on your external unless there is some mechanism that changes where the system thinks they're installed. And this wouldn't effect recovery as you cant run that script till startup.
Devi0124 said:
What is the benefit of swapping?
Sent from my SPH-L900 using xda app-developers app
Click to expand...
Click to collapse
Being able to save stuff automatically to your external without in app configuration.
Anyway.. this isn't what I'm really looking for. As far as I'd be concerned.. the system overhead wouldn't be an issue as I would gladly take a slowdown in read and writes to my storage for the convenience of having it accesible like that. I guess its just a matter of some genius dev compiling LVM into their kernel.

Devi0124 said:
What is the benefit of swapping?
Sent from my SPH-L900 using xda app-developers app
Click to expand...
Click to collapse
More space
Sent from my SPH-L900 using xda app-developers app

[Q] [Help] Android & Windows don't pick up sd

So today instead of formatting to fat32 i accidently formatted to ntfs and yes iv'e searched all over but all the apps say i need "modprobe fuse" and the incredible doesn't seem to have it :/
I really don't wanna move to my iphone so any help would be nice, thanks in advance

Danielombasa612 said:
So today instead of formatting to fat32 i accidently formatted to ntfs and yes iv'e searched all over but all the apps say i need "modprobe fuse" and the incredible doesn't seem to have it :/
I really don't wanna move to my iphone so any help would be nice, thanks in advance
Click to expand...
Click to collapse
Cant you just take out the sd and use a card reader and a pc to format it back to fat32?

cmlusco said:
Cant you just take out the sd and use a card reader and a pc to format it back to fat32?
Click to expand...
Click to collapse
the problem is i don't have one, oh well i think it's time to retire this phone :/
thanks cmlusco

Danielombasa612 said:
the problem is i don't have one, oh well i think it's time to retire this phone :/
thanks cmlusco
Click to expand...
Click to collapse
Well its up to you. You can get one of those adapters at walmart for like $3.

Danielombasa612 said:
the problem is i don't have one, oh well i think it's time to retire this phone :/
thanks cmlusco
Click to expand...
Click to collapse
Or learn some adb and format in recovery. I hate to see a phone given up on due to an issue reading a sdcard.
Also android has a format option in the storage menu. Have you tried that?
Sent from my Galaxy Nexus using Tapatalk 2

tiny4579 said:
Or learn some adb and format in recovery. I hate to see a phone given up on due to an issue reading a sdcard.
Also android has a format option in the storage menu. Have you tried that?
Sent from my Galaxy Nexus using Tapatalk 2
Click to expand...
Click to collapse
i booted to cwm, couldn't format because the phone doesn't recognize it.
tired it from cm10.1 storage, no luck so idk anymore.

Try this:
1. Reboot into recovery.
2. Connect phone to PC (must have working adb)
3. Start->Run->cmd
4. Type adb shell where you normally would run adb.
5. mkdosfs -F 32 /dev/block/mmcblk1p1
Or simpler, did you try wiping external storage (in TWRP recovery) or a similar sdcard wipe in CWM?

tiny4579 said:
Try this:
1. Reboot into recovery.
2. Connect phone to PC (must have working adb)
3. Start->Run->cmd
4. Type adb shell where you normally would run adb.
5. mkdosfs -F 32 /dev/block/mmcblk1p1
Or simpler, did you try wiping external storage (in TWRP recovery) or a similar sdcard wipe in CWM?
Click to expand...
Click to collapse
adb keeps giving me "error device not found"
& i had cwm installed because i had to flash an unsigned zip T.T
ty anyways for your help guys!
p.s i've always loved your ROM's & kernels keep it up dude ^^

Danielombasa612 said:
adb keeps giving me "error device not found"
& i had cwm installed because i had to flash an unsigned zip T.T
ty anyways for your help guys!
p.s i've always loved your ROM's & kernels keep it up dude ^^
Click to expand...
Click to collapse
Do the commands in a terminal emulator app.
su
mkdosfs -F 32 /dev/block/mmcblk1p1

cmlusco said:
Do the commands in a terminal emulator app.
su
mkdosfs -F 32 /dev/block/mmcblk1p1
Click to expand...
Click to collapse
mkdosfs -F 32 /dev/block/mmcblk1p1: not found
thats what it says

[4.3] Can't mount external partition with Link2SD on rooted Xperia M

Hi all,
I have a sony Xperia M (C1905). Till some days ago I have the old android release with rooted access and link2sd. All worked good.
With the last 4.3 update I had some problems, since I'm not an expert android developer . However I managed to root my phone using the haresh311999 guide.
I have my phone rooted, checked also with Root checker. I've also SuperSu, BusyBox and Link2Sd app. I've enabled the debug mode and checked the MSC storage mode.
But in Link2sd I cannot mount my external partition in which I used to link all the bigger apps. I've an ext3 partition and before the 4.3 upgrade it worked good. Now If I try to rebuild the script I got an error:
Mounting script cannot be created (This string isn't the original one, since I'm not english).
"mount: Operation not supported on transport endpoint"
Click to expand...
Click to collapse
I've found in the forum that I should try this procedure but with adb I can't run adb mount or adb root:
adbd can't run as root in production builds
Click to expand...
Click to collapse
I've tried also with adb shell and su command, to mount system as r/w but till now I haven't succeded....
$ adb shell
$ su
# mount -o rw,remount /system
Click to expand...
Click to collapse
Any suggestion ?

You can try to set second partition with FAT32,,
My partition workin' perfect,,
Sent from my C1905 using XDA Premium 4 mobile app

Also my ext3 was working good.
I don't want to lose all the data in the partition...
If there are some fixes I prefer to try before format it... Now I just had an idea: I can try to do another partition with the minitool and try if there is only a filesystem problem...

must be ext4 on my working fine and fast

and i got bootloop :/

Root device clean partition and create new and mount script should be ok
Wysyłane z mojego C1905 za pomocą Tapatalk 2

orion_42 said:
Hi all,
I have a sony Xperia M (C1905). Till some days ago I have the old android release with rooted access and link2sd. All worked good.
With the last 4.3 update I had some problems, since I'm not an expert android developer . However I managed to root my phone using the haresh311999 guide.
I have my phone rooted, checked also with Root checker. I've also SuperSu, BusyBox and Link2Sd app. I've enabled the debug mode and checked the MSC storage mode.
But in Link2sd I cannot mount my external partition in which I used to link all the bigger apps. I've an ext3 partition and before the 4.3 upgrade it worked good. Now If I try to rebuild the script I got an error:
I've found in the forum that I should try this procedure but with adb I can't run adb mount or adb root:
I've tried also with adb shell and su command, to mount system as r/w but till now I haven't succeded....
Any suggestion ?
Click to expand...
Click to collapse
echo juned said:
You can try to set second partition with FAT32,,
My partition workin' perfect,,
Sent from my C1905 using XDA Premium 4 mobile app
Click to expand...
Click to collapse
orion_42 said:
Also my ext3 was working good.
I don't want to lose all the data in the partition...
If there are some fixes I prefer to try before format it... Now I just had an idea: I can try to do another partition with the minitool and try if there is only a filesystem problem...
Click to expand...
Click to collapse
darekesp said:
must be ext4 on my working fine and fast
Click to expand...
Click to collapse
n00BXperia said:
and i got bootloop :/
Click to expand...
Click to collapse
darekesp said:
Root device clean partition and create new and mount script should be ok
Wysyłane z mojego C1905 za pomocą Tapatalk 2
Click to expand...
Click to collapse
Well, I am sure you must be using Link2Sd to mount games/applications on your Xperia.
Mind if I suggest that you can use FOLDER MOUNT
FOLDER MOUNT LINK
This is amazing little software which requires root but it doesnot do anything more than telling games where to find the OBB files.
In free version, you can mount upto 3 games where as in full version, you can use unlimited mounts!
Check it out and you wouldnot use Link2SD any more

orion_42 said:
Also my ext3 was working good.
I don't want to lose all the data in the partition...
If there are some fixes I prefer to try before format it....
Click to expand...
Click to collapse
Same problem on a different device... solution: in Link2SD, choose EXT4 (even if the 2rd partition is actually EXT2/3).
This worked for me, and I didn't lose any data in the EXT2 partition. No reformatting needed.

dangerzone said:
Same problem on a different device... solution: in Link2SD, choose EXT4 (even if the 2rd partition is actually EXT2/3).
This worked for me, and I didn't lose any data in the EXT2 partition. No reformatting needed.
Click to expand...
Click to collapse
Worked for me as well on Samsung Xcover2 GT-7710

br0ziliy said:
Worked for me as well on Samsung Xcover2 GT-7710
Click to expand...
Click to collapse
Had the same error, choose ext4 as the partition type and it created the script and asked me to reboot my phone just like it used to on all my other devices.

orion_42 said:
Also my ext3 was working good.
I don't want to lose all the data in the partition...
If there are some fixes I prefer to try before format it... Now I just had an idea: I can try to do another partition with the minitool and try if there is only a filesystem problem...
Click to expand...
Click to collapse
darekesp said:
must be ext4 on my working fine and fast
Click to expand...
Click to collapse
I couldn't believe that.
Will ext partitions work on our XM?
I had tried many times.
boot loop was the result :crying:
I had formatted all types of ext versions. no hope.
Now I am using Memory Swap (JB 4.3)
but still I want Link2SD to be worked.
I have Link2SD Pro App.
Will Link2SD work with swapping?
Now I have been using "nicky root" for rooting, since its a "full root" method.
I have a reserve of 5GB for second partition; not formatted.
Please guide me......

I have a LG L65, had the same problem, but could fix it
Hi, guys.
I have a LG L65 running Android 4.4.2 KitKat. I had the same problem. My phone was rooted (using towelroot), my SD Card was partitioned, but couldn't get the mount script. I tried what some of you said about creating an ext2 partition and choosing ext4 on Link2SD, and it worked.
Also, don't know if it matters or not, but I'll say it anyway; I was using FAT for my data partition, but switched to FAT32.

Great, ext4 did the trick. Thank you very much!

Sony E1 D2004 (4.4.2) fixed
dangerzone said:
Same problem on a different device... solution: in Link2SD, choose EXT4 (even if the 2rd partition is actually EXT2/3).
This worked for me, and I didn't lose any data in the EXT2 partition. No reformatting needed.
Click to expand...
Click to collapse
*******
Also worked on my Sony E1 D2004 (4.4.2). Thanx, dangerzone!:good:
Who'd have thunk that 4 means 2? !!!
Rob

dangerzone said:
Same problem on a different device... solution: in Link2SD, choose EXT4 (even if the 2rd partition is actually EXT2/3).
This worked for me, and I didn't lose any data in the EXT2 partition. No reformatting needed.
Click to expand...
Click to collapse
Thanks. Worked for me too..

Bootloop?
I did the ext4 option trick, but somehow now it just turns off suddenly after that and keeps looping at the boot until I remove the SD Card. Any tips?
PS: I also re-formatted the SD Card over to the ext4 format, and that didn't work either.

dangerzone said:
Same problem on a different device... solution: in Link2SD, choose EXT4 (even if the 2rd partition is actually EXT2/3).
This worked for me, and I didn't lose any data in the EXT2 partition. No reformatting needed.
Click to expand...
Click to collapse
Confirmed - 4 does in fact equal 2. Worked fine.

choosing ex4 partition is the solution
i choosed ex4 partition and the problem solved
thank you very much
LG L70
:laugh::laugh::laugh::good::good:

Not working for me in any way. I have the second partition formated ext3, and Link2Sd says the following for each format:
mount script cannot be created...
ext3
mount: operation not supported on transport end point
ext4
mount: invalid argument
ext2
mount: no such device
... ?... WTH is going on?
Sent from my LG-D855 using XDA Free mobile app

CNK80Q3MX said:
Not working for me in any way. I have the second partition formated ext3, and Link2Sd says the following for each format:
mount script cannot be created...
ext3
mount: operation not supported on transport end point
ext4
mount: invalid argument
ext2
mount: no such device
... ?... WTH is going on?
Sent from my LG-D855 using XDA Free mobile app
Click to expand...
Click to collapse
are your kernel support move app to sd feature?