Android O, failed to mount /system, /dev/block/dm-0 is read only

from:https://android.stackexchange.com/questions/186630/android-o-failed-to-mount-system-dev-block-dm-0-is-read-only

I try to mount /system in Android O to RW using the command mount -o rw,remount /system, and i got this feedback on terminal dev/block/dm-0 is read-only *Already in adb root

Any idea? Thanks

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For debug build, user have to disable-verity at first.

adb root
adb disable-verity
adb reboot
adb remount
adb shell
mount -o rw,remount /system

In order to know build type of your android, in adb shell enter the following command

cat /system/build.prop | grep build.type