Thank you for your tips.
I have a problem, when I type rm 26, I have an error :
(parted) rm 26
rm 26
rm 26
Error: Partition /dev/block/mmcblk0p26 is being used. You must unmount it before
you modify it with Parted.
In addition, I have this line when I type mount :
/dev/userdata_moved on...