i.MX Processors中的主题 Re: How to remount /system - 8.1 imx8m

How to remount /system - 8.1 imx8m

fensy — Mon, 11 Feb 2019 08:57:29 GMT

how to remount the system partitions？

> adb remount
dm_verity is enabled on the vendor partition.
Use "adb disable-verity" to disable verity.
If you do not, remount may succeed, however, you will still not be able to write to these volumes.
remount of / failed: Permission denied
remount failed

>adb disable-verity
Device is locked. Please unlock the device first

> mount -o rw,remount /system
mount: '/system' not in /proc/mounts

>adb shell 'su mount -o rw,remount /system'
su: failed to exec -o: Permission denied

Any command will not remount.

how to remount...?

Re: How to remount /system - 8.1 imx8m

diegoadrian — Mon, 11 Feb 2019 22:26:16 GMT

Hello,

To remount the system, Please use the below adb commands.

adb devices

adb root

adb disable-verity

adb reboot (Wait until the reboot finishes)

adb root

adb remount

After those commands, your system should be remounted successfully.

Best regards,

Diego.

Re: How to remount /system - 8.1 imx8m

fensy — Tue, 12 Feb 2019 00:25:30 GMT

adb disable-verity is not worked.

> adb devices

> adb root

> adb disable-verity

Device is locked. Please unlock the device first

> adb reboot (Wait until the reboot finishes)

> adb root

> adb remount

dm_verity is enabled on the vendor partition.
Use "adb disable-verity" to disable verity.
If you do not, remount may succeed, however, you will still not be able to write to these volumes.
remount of / failed: Permission denied
remount failed

> adb disable-verity

Device is locked. Please unlock the device first

it's same..

Re: How to remount /system - 8.1 imx8m

diegoadrian — Tue, 12 Feb 2019 21:05:49 GMT

Hello,

Do you know what is your build type for your Android image? To know these, please use the bellow shell command.

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

Your Android image needs to be in userdebug mode. Otherwise, it won't be possible to remount the system partitions.

Best Regards,

Diego.

Re: How to remount /system - 8.1 imx8m

fensy — Wed, 13 Feb 2019 00:36:54 GMT

Hello. thank you for your reply.

my build type is userdebug

> cat /system/build.prop | grep build.type
ro.build.type=userdebug

T.T

but adb disable-verity is not work...

Re: How to remount /system - 8.1 imx8m

diegoadrian — Fri, 15 Feb 2019 22:33:27 GMT

Hello,

Are you using a custom build image? Or the image that you are using, is one of our demo images?

Best regards,

Diego.

Re: How to remount /system - 8.1 imx8m

fensy — Fri, 22 Feb 2019 00:53:09 GMT

Finally I solved.

1. Unlock the device.

a. Boot up the device.

b. Choose Settings -> Developer Options -> OEM Unlocking to enable OEM unlocking.

c. Enter Fastboot mode on the device. Execute the following command on the target side:

reboot bootloader

d. Unlock the device. Execute the following command on the host side:
fastboot oem unlock

e. Wait until the unlock process is complete.

2. Disable DM-verity.

a. Boot up the device.

b. Disable the DM-verity feature. Execute the following command on the host side:
adb root

adb disable-verity

adb reboot

Re: How to remount /system - 8.1 imx8m

diegoadrian — Fri, 22 Feb 2019 16:54:37 GMT

Hello,

Thank you for share your solution. This could help future problems.

Best Regards,

Diego.