How to change the hosts file on android

android hosts
Filip Majernik picture Filip Majernik · Oct 17, 2011 · Viewed 178.4k times · Source

I have successfully rooted my Samsung Galaxy Mini (android 2.2.1) and thought, that I could change anything (as root usually can).

I would like to change the hosts file on the android, to include some local addresses. However, I still get the message that I do not have permission to do that. I tried following options:

  1. adb push /path/to/my/new/hosts /system/etc ... and I got the response Read-only file system.

  2. directly in the shell on the phone. But this didn't work either. I can do su in the console, but cannot change the file.

Isn't it strange, that as super user I am not allowed to change some files?

Answer

Leif Andersen picture Leif Andersen · Oct 17, 2011

You have root, but you still need to remount /system to be read/write

$ adb shell
$ su
$ mount -o rw,remount -t yaffs2 /dev/block/mtdblock3 /system

Go here for more information: Mount a filesystem read-write.

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