Develop Bugs

Mounting /system as rw

Alright, so I've been trying to mount the /system partition as rw today now that we have perm-root and I've been failing. I'm tried multiple mount options such as
mount -o rw,remount -t ext3 /system
mount -o rw,remount -t ext3 /dev/block/mmcblk0p15 /system
and a few others. The command works but when I try to uninstall an application via the package manager:
pm uninstall /system/app/amazonmp3.apk
pm uninstall /system/app/amazonmp3
I get failure.
I was also searching in the init.rc scripts in /, and noticed that it mounts the /system twice. Once in rw and then again in ro. I can't change that file though since for whatever reason, I still can't access the /system even with perm-root (s-off).
Titanium Backup also doesn't detect any /system applications.
Any thoughts, or enlightening clarifications? I'm not a Linux beginner and have experience in system administration all the way from Debian Sid to Arch Linux.
EDIT:
Solution: I have ro.secure=0 now and the remount is now successful.

You are using the pm command incorrectly. The argument is package name, not file name.
pm uninstall com.amazon.mp3
pm list packages for a full list.

That would be the reason. Unfortunately I can't look at the man pages of these commands on the phone ;D.

You edited your post to show that you now have r/w access to the /system folder, but you didn't say how you achieved ro.secure=0.
Care to share? I'm having the same issue.

perm root will give you ro.secure=0

jgro1976 said:
You edited your post to show that you now have r/w access to the /system folder, but you didn't say how you achieved ro.secure=0.
Care to share? I'm having the same issue.
Click to expand...
Click to collapse
rosecure=0 is set in the ramdisk of the kernel. It allows easy mounting rw , as in adb remount, however shouldn't be needed. Use this to mount as rw:
# mount -o rw,remount /dev/block/mmcblk0p25 /system
Replace rw with ro and run again when your done to return system to ro. I just tested it and it does mount as rw

Just to make sure it worked, I type that and get:
Usage: mount [-r] [-w] [-options] [-t type] device directory
after trying this.

jgro1976 said:
Just to make sure it worked, I type that and get:
Usage: mount [-r] [-w] [-options] [-t type] device directory
after trying this.
Click to expand...
Click to collapse
U sure you typed it exactly as I did?
There is a space after /dev/block/mmcblk0p25 before /system
Edit: and no space between comma and remount as in rw,remount

Yeah, that's how I typed it, exactly as you had it =\

jgro1976 said:
Yeah, that's how I typed it, exactly as you had it =\
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Click to collapse
Hmm, and you did this from root prompt # not $.
Can anyone else confirm or deny that command for me. I'm gonna flash a unmodified kernel when I get home tonight and see if that makes a difference.

fastludeh22 said:
Hmm, and you did this from root prompt # not $.
Can anyone else confirm or deny that command for me. I'm gonna flash a unmodified kernel when I get home tonight and see if that makes a difference.
Click to expand...
Click to collapse
I can confirm it doesn't work on my G2 either. I'm using Cyanogen RC1 btw.

try
mount -o remount,rw /dev/block/mmcblk0p25 /system
maybe the rw has to come after remount.
Anyways, I know mine works on permrooted stock

That did the trick, thanks!

ratchetrizzo said:
try
mount -o remount,rw /dev/block/mmcblk0p25 /system
maybe the rw has to come after remount.
Anyways, I know mine works on permrooted stock
Click to expand...
Click to collapse
jgro1976 said:
That did the trick, thanks!
Click to expand...
Click to collapse
So weird. If I type it that way, I get the mount options menu u were getting. If I type it my way it works.

I was messing around with remounting the /system partition with rw permissions, and the thing is that it does work as in, it doesn't give you an error when mounting, but it still doesn't let you access it. It's weird.
As for the ro.secure, I just used installed bacon bits, and it did it for me.

There's an app for that! I'm using a market app called mount /system (rw / ro). You can just search mount rw in the market, its free too
Sent from my T-Mobile G2 using XDA App

Can't you just use adb remount?

It worked for me (GT-P1000, CM 10.1-20130218-experimental- cdesai)

[Q] Can't write to /system [SOLVED]

Guys, can someone tell me what i'm missing? I followed this guide to root and S-OFF my phone, but just now i realized that i have no write access to /system partition. It isn't very important for me, since i'm flashing only rooted ROMs and when i need to gain write access to /system partition - i'm rebooting into CW Recovery, but... It would be handy to have it anyway
Some info form what i see in fastboot:
VISION PVT ENG S-OFF
HBOOT-0.8.4.2000
RADIO-26.03.02.26_M
Thank you in advance.

Did you verify that you have root? Use the Android Terminal Emulator, type su and if you get a #, you're good to go. If you do have root, just use Root Explorer and hit the R/W button while in the system folder.
Sent from my HTC Vision using XDA App

ScooterG said:
Did you verify that you have root? Use the Android Terminal Emulator, type su and if you get a #, you're good to go.
Click to expand...
Click to collapse
Yes, i'm getting root permissions here.
ScooterG said:
If you do have root, just use Root Explorer and hit the R/W button while in the system folder.
Click to expand...
Click to collapse
When i press mount as R/W, nothing happens and i can't make any changes in /system partition.
Also, i tried Font Changer Lite (from Market), but i'm getting message:
"Write access for the system partition was not established on your device and therefore this application will have to be closed.
Please make sure your device has full root before you try again"
Am i missing something? Thanks for quick reply btw.

Using ADB
1. adb shell
2. mount -o rw,remount -t ext3 /dev/block/mmcblk0p25 /system
3. exit

aznsnake666 said:
2. mount -o rw,remount -t ext3 /dev/block/mmcblk0p25 /system
Click to expand...
Click to collapse
"mount -o rw,remount /system" should work too.
(you need to mount /system specifically as rw, by default it's still mounted read-only even if you have root/S-OFF)

Or simply:
adb remount
Love that No need to remember the blocks and hassle with the mount command

AnyDone said:
Or simply:
adb remount
Love that No need to remember the blocks and hassle with the mount command
Click to expand...
Click to collapse
This is the best way I've found to do it, but it is only temporary.

Thank you guys very much, that worked
Edit: Font Changer Lite still complaining about permissions.

There's a /system remount app in the market lol
Sent from my HTC Vision using XDA App

stevencpoynter said:
There's a /system remount app in the market lol
Click to expand...
Click to collapse
Sure, let's download an app for each ADB command, so then we can complain about having not enough of internal memory again

I know that sounded a little sarcastic lol, was in the bank waiting in line.
Seriously though, there's a one click remount app, its wonderful as I no longer have to use adb or a terminal to make /system rw
Sent from my HTC Vision using XDA App

[Q] Help needed

I just rooted my phone and i am trying to delete some of the apps that come with the phone.
I have found these steps in the forms but the problem is that, if I open a CMD and type this, it is not accepted.
I am guessing there is a step missing
1. type in the command line on your PC
Code:
adb shell
2. now you need to get super user rights:
Code:
su
3. you need to remount the system partition
Code:
mount -o rw,remount -t ext3 /dev/block/mmcblk1p21 /system
4. change to the /system/app directory and you can now rename/delete all files in there
I hope you make a copy of this folder, so you can always revert back to factory default. A hardreset doesn't restaure the deletet apps, so be carefull. Also you need to check on your own IF you can really delete a app or not. I don't know what features you use.

hamd3000 said:
I just rooted my phone and i am trying to delete some of the apps that come with the phone.
I have found these steps in the forms but the problem is that, if I open a CMD and type this, it is not accepted.
I am guessing there is a step missing
1. type in the command line on your PC
Code:
adb shell
2. now you need to get super user rights:
Code:
su
3. you need to remount the system partition
Code:
mount -o rw,remount -t ext3 /dev/block/mmcblk1p21 /system
4. change to the /system/app directory and you can now rename/delete all files in there
I hope you make a copy of this folder, so you can always revert back to factory default. A hardreset doesn't restaure the deletet apps, so be carefull. Also you need to check on your own IF you can really delete a app or not. I don't know what features you use.
Click to expand...
Click to collapse
You can use root explorer, an apk that uses superuser permissions, or, maybe you didn't reboot the cellphone, when you root your, always reboot, in order to take the "effect"

try freezing app. Easier and safer. If you want to delete. Root explorer or try super manager.
Sent from my MB525 using XDA App

I do have super user permission , but i still dont know what to do

hamd3000 said:
I do have super user permission , but i still dont know what to do
Click to expand...
Click to collapse
Did you try with Titanium Backup ?, I think you can freeze, clear data and unninstall it !, let me know if I'm wrong

Download supermanager app from market. Enable root function. Get to phone dir. System then app
Sent from my MB525 using XDA App

tava2003 said:
Did you try with Titanium Backup ?, I think you can freeze, clear data and unninstall it !, let me know if I'm wrong
Click to expand...
Click to collapse
worked like a charm

flashplayer 10.3 not working on rooted evo

my flashplayer 10.3 isnt working never did,on rooted 2.2 evo please help,, thank you!!

Uninstall the update then uninstall flash player (the one that was part of the rom). Then navigate to system/lib and delete libflashplayer.so (I think thats the name of it but I forget) if it is still there. Then download and install flash from the market. That should fix it.

lovethyEVO said:
Uninstall the update then uninstall flash player (the one that was part of the rom). Then navigate to system/lib and delete libflashplayer.so (I think thats the name of it but I forget) if it is still there. Then download and install flash from the market. That should fix it.
Click to expand...
Click to collapse
when i try to deleted the lidflashplayer.so it say cannot be deleted the file system is ready-only, need help....

rotzie said:
when i try to deleted the lidflashplayer.so it say cannot be deleted the file system is ready-only, need help....
Click to expand...
Click to collapse
You can use either root explorer or terminal emulator. You would need titanium backup to uninstall the flash that came with the rom.
If you don't have root explorer here are the terminal commands. Press enter after each command.
Code:
su
mount -o rw,remount /dev/block/mtdblock3 /system
cd system/lib
ls
After entering ls you will see a list of all the files in this directory. Look through it and find the one file that says libflashplayer.so
If you have libflashplayer.so then do these next commands
Code:
rm libflashplayer.so
mount -o ro,remount /dev/block/mtdblock3 /system
If you don't have libflashplayer.so just issue the mount command to set the system back to read-only (mount -o ro,remount /dev/block/mtdblock3 /system).

i have rootexplorer and i got i deleted,did not use titanium,but my 10.3 player sits in my apps just saying uninstalling.no date,no force stop nothing....

I had the same problem.. I deleted the app and went to explorer and deleted the folder and reinstalled.. works fine now

[Q] Deleting system file in terminal causes reboot

Hello all,
I'm trying to delete a system file using the Android terminal (as my end goal is to put it in a run shell task in Tasker) and it either reboots my phone or just doesn't delete.
Long story short, I'm using the Weak Sauce root method, but I do not have S-Off as I like how easy it is to undo the Weak Sauce root alone. This means, of course, I don't have immediate RW access to system. So here's what I've done:
Code:
# mount -o rw,remount -t yaffs2 /dev/block/mmcblk0p46 /system
# busybox rm -f /system/media/audio/ui/camera_click.ogg
# mount -o ro,remount -t yaffs2 /dev/block/mmcblk0p46 /system
When I do the first and last commands alone, the system mounts as RW and RO correctly, confirmed with # mount|grep system. But that middle command is the problem. Sometimes nothing will happen, other times my phone will reboot. I've also tried adding the following before the rm command with no success:
Code:
# chmod 777 /system/media/audio/ui/camera_click.ogg
I AM able to delete the file manually through ES File Explorer when mounted RW. But it comes back after I restart my phone, hence why I want this command to be used in Tasker.
What am I doing wrong?
PS: as for the "why" of deleting the shutter sound file, I take screenshots sometimes and the sound drives me nuts. I've tried removing the ogg file from the camera apk, but that didn't work after a reboot. I also tried replacing the ogg file with a silent one, but no success there either as the real one reloads itself when I restart.

Delete the file in recovery using TWRP
Sent from my HTC One_M8 using Tapatalk

SmiLey497 said:
Delete the file in recovery using TWRP
Sent from my HTC One_M8 using Tapatalk
Click to expand...
Click to collapse
I'm trying to do it from the terminal so I can eventually put it into Tasker. I can delete it successfully with ES File Explorer, so no need for recovery. I just need some way to get it to work through the terminal.

If the file is coming back then you don't have proper write access to system and the file isn't actually being deleted which Is why it appears to come back.
Try using root explorer instead or do it through TWRP. Make system RW then just move or rename the file rather than delete it. If you have proper write access it will stick.

heather1209 said:
I'm trying to do it from the terminal so I can eventually put it into Tasker. I can delete it successfully with ES File Explorer, so no need for recovery. I just need some way to get it to work through the terminal.
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Click to collapse
It comes back when you reboot. Your system is not writable you need to S-OFF. get system RW kernel, or delete through recovery.

SmiLey497 said:
It comes back when you reboot. Your system is not writable you need to S-OFF. get system RW kernel, or delete through recovery.
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Click to collapse
Ah, that makes sense. What's the system RW kernel you mentioned? I'm not familiar with that.

heather1209 said:
Ah, that makes sense. What's the system RW kernel you mentioned? I'm not familiar with that.
Click to expand...
Click to collapse
http://forum.xda-developers.com/showthread.php?t=2701816

heather1209 said:
Ah, that makes sense. What's the system RW kernel you mentioned? I'm not familiar with that.
Click to expand...
Click to collapse
[KERNEL] [June 20] [Sense] [GPE] ElementalX 0.19 I think that'll work on stock Sense system.

heather1209 said:
Ah, that makes sense. What's the system RW kernel you mentioned? I'm not familiar with that.
Click to expand...
Click to collapse
He means flash a kernel that has write access to system enabled.

SmiLey497 said:
http://forum.xda-developers.com/showthread.php?t=2701816
Click to expand...
Click to collapse
Or yeah, the MOD can work too :good: