A terminal command for a rooted Android to remount /System as read/write

Question

I\'m writing an android app that needs to copy a file to the \"/system\" partition at runtime. I\'ve got the commands to run \"su\" and can successfully request SuperUser pe

Answer 1

Try

mount -o remount,rw /system

If no error message is printed, it works.

Or, you should do the following.

First, make sure the fs type.

mount

Issue this command to find it out.

Then

mount -o rw,remount -t yaffs2 /dev/block/mtdblock3 /system

Note that the fs(yaffs2) and device(/dev/block/mtdblock3) are depend on your system.

Answer 2

I use this command:

mount -o rw,remount /system

Answer 3

This is what works on my first generation Droid X with Android version 2.3.4. I suspect that this will be universal. Steps:

1. root system and install su.

2. Install busybox

3. Install a terminal program.

4. to mount system rw first su then

   busybox mount -o rw,remount system
   

5. To remount ro

   busybox mount -o ro,remount system
   

Note that there are no slashes on "system".

Answer 4

You can try adb remount command also to remount /system as read write

adb remount

Answer 5

Instead of

mount -o rw,remount /system/

use

mount -o rw,remount /system

mind the '/' at the end of the command. you ask why this matters? /system/ is the directory under /system while /system is the volume name.

Answer 6

If you have rooted your phone, but so not have busybox, only stock toybox, here a one-liner to run as root :

mount -o rw,remount $( mount | sed '/ /system /!d' | cut -d " " -f 1 ) /system

toybox do not support the "-o remount,rw" option

if you have busybox, you can use it :

busybox mount -o remount,rw /system