[2746] in linux-scsi channel archive
but it works in dos .. 8-(
daemon@ATHENA.MIT.EDU (Whay S. Lee)
Mon Nov 3 13:53:14 1997
Date: Mon, 3 Nov 1997 10:50:55 -0800 (PST)
From: "Whay S. Lee" <wslee@ai.mit.edu>
To: linux-scsi@vger.rutgers.edu
Reply-To: wslee@cva.stanford.edu
Please plese help me .. I am at the end of my wits .. 8-(
thanks much,
whay.
Symptom:
Cdrom won't mount, optical drive flaky. Both work just fine
in dos (can copy from slakware cdrom to optical drive and read
it back)
(with slakware 3.2 CD in the drive, also tested with RedHat CD ):
# mount -t iso9660 /dev/scd0 /mnt/cdrom -o ro
-->>> Unable to identify CD-ROM Format
mount: wrong fs type, bad option, bad superblock on /dev/scd0,
or too many mounted file systems.
_BUT_ workbone plays audio CDs just fine, and
"dd if=/dev/scd0 of=/dev/scd0 bs=2048" works just fine too.
(relevant?) kernel mesg in /var/adm/messages :
sr_photocd: (SONY/PIONEER) Hmm, seems the CDROM doesn't support multisession CD's.
(the slakware CD is not multisesion, right?)
Setup:
Slackware 3.2 Kernel 2.0.29
recompiled w/scsi driver: g_NCR5380 + 53c400 extension.
Cyrix 486DLC 40Mhz
dtc3150v scsi controller, irq 5, memory mapped 0xd8000 (pseudo-dma)
Sony SMO-C301 magneto optical drive (id5)
Sony CDU-8012 cdrom drive (id6 , end of chain.)
(No termination device visible on CDU-8012, I assume it's
internally terminated, since this setup works fine in dos.
Anyone has the spec ?)
/proc:
filesystems:
ext2
minix
msdos
vfat
odev proc
odev nfs
odev smbfs
iso9660
devices:
Block devices:
2 fd
3 hd
8 sd
11 sr
scsi/scsi:
Attached devices:
Host: scsi0 Channel: 00 Id: 05 Lun: 00
Vendor: SONY Model: SMO-C301-00 Rev: 1.43
Type: Direct-Access ANSI SCSI revision: 01
Host: scsi0 Channel: 00 Id: 06 Lun: 00
Vendor: SONY Model: CD-ROM CDU-8012 Rev: 3.1a
Type: CD-ROM ANSI SCSI revision: 02
scsi/g_NCR5380/0
SCSI host number 0 : Generic NCR5380/NCR53C400 Scsi Driver
Generic NCR5380 driver version 1
NCR5380 core version 7
NCR53C400 extension version 2
NCR53C400 card detected
NCR53C400 pseudo DMA used
Using memory mapping at base 0xd8000, on interrupt 5
T:5 Direct-Access SONY SMO-C301-00 1.43
1 kb read in 0 secs
0 kb written in 0 secs
T:6 CD-ROM SONY CD-ROM CDU-8012 3.1a
170 kb read in 1 secs @ 174080 bps
0 kb written in 0 secs
REQ not asserted, phase unknown.
No currently connected command
issue_queue
disconnected_queue
Note: I have another identical megneto optical drive in a p133,
hooked up through a SB-16/SCSI (aha152x) with a Hitachi harddisk (scsi2)
and a Chinon CDS525(SCSI2), and they work just fine too -> appears
that mixing scsi-1 and scsi-2 on the same chain is not the source
of the problem.
The optical drive from the above flaky 486 system had been tested
in the p133, and that was ok too.
