* Fletcher wrote in grml's BTS on 20091117 / 00:04:

> After 70 seconds I get "  -> Mounted live system on /dev/sr0"

> Lots of error messages in dmesg.  The particular messages between about the 4th
> and 64th seconds in the log were a series of 6 lines repeated about every 6 or 7
> seconds consisting of (only readable text copied):

> Unhandled sense code
> Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
> Sense key : Hardware Error [current]
> Add. Sense: Time out on logical unit
> end_request: I/O error, dev sr0, sector 490552
> Buffer I/O error on device sr0, logical block 61319

Very probably you've either a broken CD medium or a broken CD drive.

regards,
-mika-