Subject: kern/2576: Bug in SCSI CD-ROM driver
To: None <gnats-bugs@NetBSD.ORG>
From: Matthias Scheler <>
List: netbsd-bugs
Date: 06/27/1996 12:41:26
>Number:         2576
>Category:       kern
>Synopsis:       Bug in SCSI CD-ROM driver
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    kern-bug-people (Kernel Bug People)
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Thu Jun 27 07:05:01 1996
>Originator:     Matthias Scheler
Matthias Scheler
>Release:        1.2_ALPHA
System: NetBSD sandra 1.2_ALPHA NetBSD 1.2_ALPHA (SANDRA) #0: Thu Jun 13 15:14:07 MET DST 1996 tron@sandra:/usr/src/sys/arch/i386/compile/SANDRA i386

Two days ago I bought a music cd and discovered that it contains an extra
data track with two QuickTime movies. But unluckily NetBSD's SCSI CD-ROM
driver is not able to handle it. That's what the kernel says:

cd0(ncr0:2:0): medium error, info = 16 (decimal), data = 00 00 00 00 00 00 00 00 00 00

This in on a P90 with a NCR and a Toshiba 5201, but I get the same message
on an Amiga with Z3 Fastlane and a Toshiba 3701 which reads the CD-ROM
fine under AmigaOS.

Because NetBSD is able to read other mixed CD ROMs I suppose the problem
is that the data track is not the first track on this CD.

Buy "Herzfrequenz" by "Bluemchen" ;-), put it into a SCSI CD-ROM drive and
try to mount it with "mount_cd9660":
tron@sandra:~#mount -t cd9660 -o ro /dev/cd0a /cdrom
cd9660: Operation not permitted

Sorry, I don't know.