ok, i got a Lite-On 52x cd burner for the mac.  plugged into the second
channel of the ACard IDE controller.

i get this when i burn something:

mc0: underflow
cd0(acardide0:1:0):  Check Condition on CDB: 0x43 00 00 00 00 00 00 00 0c 40
    SENSE KEY:  Illegal Request
     ASC/ASCQ:  Illegal Field in CDB

cd0(acardide0:1:0):  Check Condition on CDB: 0x28 00 00 00 00 00 00 00 01 00
    SENSE KEY:  Illegal Request
     ASC/ASCQ:  Logical Block Address Out of Range

cd0: I/O error reading block zero
cd0(acardide0:1:0):  Check Condition on CDB: 0x43 00 00 00 00 00 00 00 0c 40
    SENSE KEY:  Illegal Request
     ASC/ASCQ:  Illegal Field in CDB

a) is this anything to be concerned about?

b) the mc0: underflow is interesting, since as far as i can tell, i've never
gotten that out of mc0 before.

the other thing, is if i use a scratch space on the IDE HDD, i get all sorts
of interupt weirdness and then the machine needs to be powered off.  if i use
the SCSI disk as scratch space, i have no issues.

i've got to run to work, so i'm just shooting this out quick for you guys to
think about until i get back.  ;)

-brian
ps: i'm not ignoring you tim, i've just been swamped lately
-- 
"Now you know why I got the everliving hell OUT of Windows administration.
Knowing it doesn't make it any easier.  It's just broken-as-designed."