On Sat, Jan 18, 2020 at 6:32 AM Wols Lists <antli...@youngman.org.uk> wrote: > > Not that I know any gory details, but if mkswap is ALL that you have > done, then probably it's just destroyed the ext header at the start of > the partition. > > If you can get hold of the alternate (backup) header, then you should be > able to restore the filesystem. >
You can learn where the alternate superblocks are by doing a 'mkfs.ext3 -n /dev/$BAD_DEV' and it will do _nothing_ to the disk, but it will tell you where it places the backup superblocks for a disk that size. - Matthew
