I have a synology nas with a one single HDD. Synology SW partitioned that "Basic" storage to 3 partitions. 1,2 are raid for SW, and the 3rd is a member of mdadm raid. After my NAS felt to the floor the disk became totally broken. I was able to restore partition table with testdisk. But all the data is stored under /dev/md3p1 instead of /dev/md3. Synology SW is looking for /dev/md3 to mount it to the system.
How can I edit sectors/partitions to get /dev/md3 from /dev/md3p1 ?
Unpartition /dev/md3 but keep btrfs filesystem untouched I tried simply remove md3p1 but btrfs restore cannot find the filesystem