"Cannot find file system superblock" error - how to recover?

[Scott I. Remick]

--- Sergey 'DoubleF' Zaharchenko <doublef at tele-kom.ru> wrote:
> Try
> 
> $ hd /dev/...| grep -A 5 "02 00 00 00 0c 00 04 01  2e 00 00 00 02 00 00
> 00"

Well that definitely produced something:

bash-2.05b# hd /dev/ad2s1e | grep -A 5 "02 00 00 00 0c 00 04 01  2e 00 00 00
02 00 00"
002d0000  02 00 00 00 0c 00 04 01  2e 00 00 00 02 00 00 00 
|................|
002d0010  0c 00 04 02 2e 2a 00 00  00 a0 09 00 10 00 04 00 
|.....*..........|
002d0020  70 69 63 73 00 10 6a c0  00 f8 40 00 14 00 04 08 
|pics..j... at .....|
002d0030  6f 68 64 5b 6e 70 66 73  00 00 00 00 03 00 00 00 
|ohd[npfs........|
002d0040  14 00 08 0a 58 42 38 32  43 6b 6e 62 69 63 00 d9 
|....XB82Cknbic..|
002d0050  00 00 63 00 0c 00 04 03  65 70 63 00 00 58 63 00 
|..c.....epc..Xc.|
--
002f4000  02 00 00 00 0c 00 04 01  2e 00 00 00 02 00 00 00 
|................|
002f4010  0c 00 04 02 2e 2e 00 00  00 a0 09 00 10 00 04 04 
|................|
002f4020  70 69 63 73 00 14 6a c4  00 f8 40 00 14 00 04 08 
|pics..j... at .....|
002f4030  6f 6c 64 5f 6e 74 66 73  00 00 00 00 03 00 00 00 
|old_ntfs........|
002f4040  14 00 08 0a 58 46 38 36  43 6f 6e 66 69 67 00 d9 
|....XF86Config..|
002f4050  00 00 63 00 0c 00 04 03  65 74 63 00 00 58 63 00 
|..c.....etc..Xc.|

That second one seems to be more intact. "pics" and "old_ntfs" and "X" were
directories off /data (there were others). The first match would appear to
be slightly corrupted (that "etc" might have been a backup I made of /etc at
some point in case of / failure).

It's still churning away but I'm going to assume that it's found all it's
going going to and send this email now.

For what it's worth, FedEx is estimating Monday the 23rd as delivery of the
spare 80GB.