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iam a newbie.but i have learnt adb commands. i need to enable usb debugging through adb shell commands. i am confused with terminologies itself so please answer simply.

steps i want to perform: 1.boot into recovery mode 2.run adb shell 3.mount system & data partitions 4.some adb commands...

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If you're using a custom recovery:
CWM (Clockworkmod-based):
1. Use volume buttons to navigate and power button to select
2. Find "Mounts and storage" menu
3. Select "Mount /system" and "Mount /data"

TWRP (TeamWin's):
1. Tap "Mount" in main menu
2. Tap "data" and "system"

Manual way (using adb command):
Run adb shell and run these in the given sub-shell:

mount -o rw /dev/block/bootdevice/by-name/system /system
mount -o rw /dev/block/bootdevice/by-name/data /data

In case /dev/block/bootdevice doesn't exist, run:

fdisk -l /dev/block/mmcblk0
# If it shows a lot of entries, find the partition number of system and data manually then
mount -o rw /dev/block/mmcblk0pX /system
mount -o rw /dev/block/mmcblk0pY /data
# X and Y are the numbers you found from fdisk's output
  • i am getting this error error: device '(null)' not foundi have installed google usb drivers my phone's drivers and everything is fine.although i haven't turned on usb debugging.because my touch is broken.by the way my struggle is to turn on usb debugging and use phone by mirroring to my pc – gouse360 May 16 '17 at 9:27
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mount /sys/block/mmcblk0xxx /data You will need to replace "xxx" by proper partition value, it depends on your device.

Same applies for system.

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