Seems that all the chinese app are installed from /custom. I’m looking for a way to unmount it or better to clean content and reuse disk space.
From the /fstab.m86 content, partition does have these properties, especially the RO flag :
/dev/block/platform/15570000.ufs/by-name/custom /custom ext4 ro,noload,errors=panic wait
Changing it to RW could have been a solution but the fstab is restored at every phone reboot.
Does anyone have an idea where is the template used to regenerate it??