hi, i've just installed mandrake 9.1 on my power mac 8600/300, and when I try to boot i get a message that says:

the super block could not be read or does not describe a correct ext2 filesystem.
If the device is valid and it really contains an ext2 filesystem (and not swap or ufs or something else), then the superblock is corrupt, and you might try running e2fsck with an alternate superblock: e2fsck -b 8193 <device>

: No medium found while trying to open /dev/sdc8
Failed to check filesystem. Do you want to repair the errors? (Y/N) (beware, you can loose data)

if I want to repair it, it fails and drops me into a shell that requires me either the root password or reboot.

any ideas?

here's the hd's partition map:
Partition map (with 512 byte blocks) on '/dev/scsi0.1' (/dev/sdb)
#: type name length base ( size )
1: Apple_partition_map Apple 63 @ 1
2: Apple_Driver43*Macintosh 54 @ 64
3: Apple_Driver43*Macintosh 74 @ 118
4: Apple_Driver_IOKit Macintosh 512 @ 192
5: Apple_Patches Patch Partition 512 @ 704
6: Apple_Bootstrap bootstrap 2048 @ 1216 ( 1.0M)
7: Apple_HFS MacOS 4000000 @ 3264 ( 1.9G)
8: Apple_UNIX_SVR2 Linux ext3 4699280 @ 4003264 ( 2.2G)
9: Apple_UNIX_SVR2 swap 948048 @ 8702544 (462.9M)
10: Apple_UNIX_SVR2 Linux ext3 3065328 @ 9650592 ( 1.5G)

Device block size=512, Number of Blocks=12715919 (6.1G)
DeviceType=0x0, DeviceId=0x0
Drivers-
1: @ 64 for 22, type=0x1
2: @ 118 for 36, type=0xffff

thanks a lot
diego