If you're using a custom recovery:
1. Use volume buttons to navigate and power button to select
2. Find "Mounts and storage" menu
3. Select "Mount /system" and "Mount /data"
1. Tap "Mount" in main menu
2. Tap "data" and "system"
Manual way (using
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
/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