desperately searching for superblocks

[<blovett1@rcn.com>]

Help me help me! The potato is angry!

I have an old-world power mac with  swap on sda4, / on sda5, and MacOS on sda6, and I've managed to screw up the filesystem horribly. I see from dmesg that the drive is recognized, and I see from mac-fdisk that the partition table is in fine shape. But none of the partitions are recognized (MacOS still boots fine), and if I do anything with e2fsck I get something like:

Device not configured while trying to open /dev/sda5
Possibly non-existent or swap device?

I've tried feeding fsck different backup superblocks but with no luck. Is there anything I can do?

thanks,
bill