Recover a reiserfs hard disk

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http://unix.stackexchange.com – I'm unable to mount my 300GB external (in external enclosure) HDD's single partition. None of the fsck tools add anything, they cannot even recognize the partition. I had forgotten whether I had used ext4 or reiserfs myself. The HDD seems ok. Testdisk saw a linux partition but didn't give any more details. Until ... I followed Recovering ext4 superblocks and tried the sudo losetup -v -o $i /dev/loop1 /dev/sdc command. Now testdisk at least gives me a green label, tells me it's a reiserfs 3.6 partition and gets the correct device label! I especially had luck with i=32768: $ dmesg [10147.13216 (HowTos)