Any hacker needs full access to the system files to play with the system. Andoid /system partition is read-only by default. Here is an HOWTO to mount it in read-write mode. It is assumed that you have installed android SDK in your workstation. We use adb tool in tools directory of SDK.
1. Identifying the /system partition device file: Follow the sample session.
C:\android-sdk-windows-1.1_r1\tools>adb shell
$ su
# mount
rootfs / rootfs ro 0 0
tmpfs /dev tmpfs rw,mode=755 0 0
devpts /dev/pts devpts rw,mode=600 0 0
proc /proc proc rw 0 0
sysfs /sys sysfs rw 0 0
tmpfs /sqlite_stmt_journals tmpfs rw,size=4096k 0 0
/dev/block/mtdblock3 /system yaffs2 ro 0 0
/dev/block/mtdblock5 /data yaffs2 rw,nosuid,nodev 0 0
/dev/block/mtdblock4 /cache yaffs2 rw,nosuid,nodev 0 0
/dev/block/mmcblk0p1 /sdcard vfat rw,dirsync,nosuid,nodev,noexec,uid=1000,gid=1000,fmask=0711,dmask=0700,codepage=cp437,iocharset=iso8859-1,utf8 0 0
/dev/block/mtdblock3 is the /system partition device file.
2. Remounting the /system in read-write mode:
# mount -o remount,rw -t yaffs2 /dev/block/mtdblock3 /system
3. If necessary set read-write permission to any directory under /system. Don’t forget to revert back once you get what you are intended to do.
# chmod 777 /system/fonts
4. Exit the hacker session
# exit
$ exit
Enjoy the freedom of /system.
That might be useful. Im trying to get market working on android x86
Hi
Are this commands applicable in the windows OS
coz I’m facing some problem accessing the permission
I have a gingerbread android tablet, I follow the steps above, instead of the red line on step 1 I got:
/dev/block/mtdblock4 /system cramfs ro 0 0
so I mount with those values, then i tried to chmod the system folder, I receive the error message:
Unable to chmod /system: Read-only file system
Why does it failed? Please help me
where does it get mounted to? its not under My Computer / drive list
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Try this:
# mount -o remount,rw /system
this is totatlly awesome ! 10x
but i wanted to ask something,
when i type n enter “adb push GoogleServicesFramework.apk /system/app” i got the failed msg couse of permission, but i did chmod 777 :S
the device htc desire btw
thanks again !
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I have a noname android tablet, I follow the steps above, instead of the red line on step 1 I got:
/dev/block/mtdblock4 /system cramfs ro 0 0
so I mount with those values, then i tried to chmod the fonts folder, I receive the error message:
Unable to chmod /system/fonts: Read-only file system
Why does it failed? Please help
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WHen i type in C:\android-sdk-windows\tools>adb shell $ su # mount, it says “not recognized as an operable program or file. If i put C:\android-sdk-windows\tools\adb.exe shell $ su # mount, it says $: not found. Help!
1. Replace “C:\android-sdk-windows-1.1_r1″ with your SDK installation path if necessary. The following is the command to invoke adb in shell mode.
2. Once you get $ prompt, enter su command to get root user shell. You will get # prompt.
3. Now run mount command
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Even as I love a physical keyboard, after handling the Samsung Captivate for roughly quarter-hour, it is hard to go back. Right now I am debating whether or not to go to Verizon for the Droid X, pass to Dash for the EVO, or stay with AT&T for the Captivate…selections, decisions.
got my computer to “find” my HTC Desire, but when i type “$ su” it says that “su: permission denied”. how could i get permission?
thanks!
Hi Dor, did you enter your host machine root password when su prompts you?
Dear Black God,
How can i enter host name machine root password? It don’t prompt me.
Thanks
# su root
that will give you root on a android device. The device itself must alraedy be patched/rooted.
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