I tried to use my CD-drive (Toshiba 3601) with NetBSD today.
Well it failed, predictably, else I wouldn't be writing :)

I don't know what goes wrong really, but I can specify some
of the details:

On bootup my CD drive is recognized and a rather trustworthy
number of blocks available is printed out.

I then load an ISO-9660 CD with Rockridge extensions and I
say
      mount_cd9660 /dev/cd0a /cdrom
This fails with an error message, 
"device does not support this filesystem" (or words to this effect).

When I look at the disk via the device node, something strange
happens, I go:

      cat /dev/cd0a | od    (or od < /dev/cd0a :))
      
And I get something looking like the following lines:

00000000    00000000 00000000 00000000 00000000 00000000 00000000 00000000
            *
00400000    98347834 8478346d 3474784d 37378384 34843784 89348484 48934984
            [ these numbers are made up ]
         
Ok the first peculiar thing is that I have approximately 4MB of zeroes
at the start of my CD. That can't be rite. Also peculiar is, although
a 3601 isn't shabby speedwise, that the second and third line appear 
almost, but not quite, immediately after the the first line. For a
quadruple speed drive, the wait should be approx 5-6 seconds and my
CDs light should be blazing, but it just feebly blinks a few times.

Does anyone have an idea, whats happening or what I could fix ?

Greets
   Nat!


  
------------------"Bang that bit that doesn't bang"---------------

                 Yeah, money talks / ... I should know
                  Mine always says / 'Good bye'!
                                                    David Lee Roth