cdrom hall of horror

Trying to copy a cdrom from a macmini g4:

[  276.200659] cdrom: This disc doesn't have any tracks I recognize!
[  449.319874] hdb: command error: status=0x51 { DriveReady SeekComplete Error }
[  449.319886] hdb: command error: error=0x50 { LastFailedSense=0x05 }
[  449.319892] hdb: possibly failed opcode: 0xa0
[  449.322229] end_request: I/O error, dev hdb, sector 0
[  449.322239] Buffer I/O error on device hdb, logical block 0
[  449.322797] hdb: command error: status=0x51 { DriveReady SeekComplete Error }
[  449.322805] hdb: command error: error=0x50 { LastFailedSense=0x05 }
[  449.322811] hdb: possibly failed opcode: 0xa0
[  449.325165] end_request: I/O error, dev hdb, sector 0
[  449.325171] Buffer I/O error on device hdb, logical block 0
[  467.504752] attempt to access beyond end of device
[  467.504763] hdb: rw=0, want=68, limit=4
[  467.504770] isofs_fill_super: bread failed, dev=hdb, iso_blknum=16, block=16