Linux Kernel Module Cheat

From mount, we can see that some of the mounted images are ro.

Basically, every image that was given to QEMU as qcow2 is writable, and that qcow2 is an overlay over the actual original image.

In order to make /system and /vendor writable by using qcow2 for them as well, we must use the -writable-system option:

then:

Now reboot, and relaunch with -writable-system once again to pick up the modified qcow2 images:

and the newly created file is still there:

/system and /vendor can be nuked quickly with:

as mentioned at: https://stackoverflow.com/questions/29023406/how-to-just-build-android-system-image and on:

Tested on: 8.1.0_r60.