A Tale of Two SCSI CD ROMS
Janina Sajka
janina at afb.net
Tue Mar 6 15:31:02 EST 2001
Well, this much was certainly clearly evident in your first message. But,
I wasn't asking which machine to buy.
On Tue, 6 Mar 2001, Klarich, Terry wrote:
> Because, If you have a choice of note book or lap top computers to use, it
> is my opinion that the IBM models are not as easily configurable and
> supportable.
>
> Terry
>
> -----Original Message-----
> From: Janina Sajka [mailto:janina at afb.net]
> Sent: Tuesday, March 06, 2001 10:31 AM
> To: Klarich, Terry
> Cc: 'speakup at braille.uwo.ca'; ma-linux at tux.org
> Subject: RE: A Tale of Two SCSI CD ROMS
>
>
> May I ask why you felt it necessary to send this post?
>
> On Mon, 5 Mar 2001, Klarich, Terry wrote:
>
> > Sorry, I can't help. However, my experience with IBM stink pads has been
> > nothing but problems.
> >
> > Terry
> >
> > -----Original Message-----
> > From: Janina Sajka [mailto:janina at afb.net]
> > Sent: Sunday, March 04, 2001 4:09 PM
> > To: speakup at braille.uwo.ca; ma-linux at tux.org
> > Subject: A Tale of Two SCSI CD ROMS
> >
> >
> > And, it's a tale of woe! <grin>
> >
> > I am trying to figure out why one of my ide-scsi CD ROM devices works just
> > like it should, while the second one doesn't.
> >
> > I suppose it could be something to do with the complexity of the hardware
> > setup. This is an IBM Thinkpad T20 attached to
> > an IBM docking station--at least it's attached when both devices are
> present
> > together. The one CD ROM, and it's a CDRW,
> > hence the ide-scsi, is on the Thinkpad itself in an IBM Ultrabay, as they
> > call it. The second is in the dock, also in an
> > ultrabay.
> >
> > I have no problems mounting the first, and no success at all mounting the
> > second. In fact, when I try, I hard-hang the
> > system so that I have to force power off--not even a ctrl-alt-del does the
> > trick.
> >
> > The devices are definitely there. /proc/scsi/scsi reports:
> >
> >
> > Attached devices:
> > /Host: scsi0 Channel: 00 Id: 00 Lun: 00
> > Vendor: MATSHITA Model: UJDA310 Rev: 3.53
> > Type: CD-ROM ANSI SCSI revision: 02
> > Host: scsi0 Channel: 00 Id: 01 Lun: 00
> > Vendor: TEAC Model: CD-224E Rev: 2.7B
> > Type: CD-ROM ANSI SCSI revision: 02
> > Host: scsi1 Channel: 00 Id: 06 Lun: 00
> > Vendor: CWS ORB2 Model: -SE U ID 6 Rev: D29
> >
> >
> >
> > I have /dev/scd0 and /dev/scd1. If I try, just for grins, mounting
> /dev/hde
> > (the second device), I get a very polite error message suggesting that I
> > should be using my ide-scsi.
> >
> > What I don't seem to have--and this is where I begin to lose my
> > understanding of how this all works--is sr0 and sr1. These are referred to
> > as the system boots--but they don't seem to be anywhere around:
> >
> > Mar 4 15:31:59 toccata kernel: Kernel command line: BOOT_IMAGE=current ro
> > root=301 BOOT_FILE=/boot/vmlinuz-2.4.2 hdc=ide-scsi hde=ide-scsi
> > Mar 4 15:31:59 toccata kernel: ide_setup: hdc=ide-scsi
> > Mar 4 15:31:59 toccata kernel: ide_setup: hde=ide-scsi
> > ...
> > Mar 4 15:31:59 toccata kernel: ide1: BM-DMA at 0x1c18-0x1c1f, BIOS
> > settings: hdc:pio, hdd:pio
> > Mar 4 15:31:59 toccata kernel: CMD648: IDE controller on PCI bus 08 dev
> 08
> > Mar 4 15:31:59 toccata kernel: PCI: Found IRQ 11 for device 08:01.0
> > Mar 4 15:31:59 toccata kernel: PCI: The same IRQ used for device 00:02.1
> > Mar 4 15:31:59 toccata kernel: CMD648: chipset revision 1
> > Mar 4 15:31:59 toccata kernel: CMD648: 100%% native mode on irq 11
> > Mar 4 15:31:59 toccata kernel: ide2: BM-DMA at 0x2000-0x2007, BIOS
> > settings: hde:DMA, hdf:pio
> > Mar 4 15:31:59 toccata kernel: ide3: BM-DMA at 0x2008-0x200f, BIOS
> > settings: hdg:pio, hdh:pio
> > Mar 4 15:31:59 toccata kernel: hda: IBM-DJSA-220, ATA DISK drive
> > Mar 4 15:31:59 toccata kernel: hdc: UJDA310, ATAPI CD/DVD-ROM drive
> > Mar 4 15:31:59 toccata kernel: hde: CD-224E, ATAPI CD/DVD-ROM drive
> > Mar 4 15:31:59 toccata kernel: ide0 at 0x1f0-0x1f7,0x3f6 on irq 14
> > Mar 4 15:31:59 toccata kernel: ide1 at 0x170-0x177,0x376 on irq 15
> > Mar 4 15:31:59 toccata kernel: ide2 at 0x2020-0x2027,0x2016 on irq 11
> > Mar 4 15:31:59 toccata kernel: hda: 39070080 sectors (20004 MB) w/1874KiB
> > Cache, CHS=2584/240/63, UDMA(33)
> > Mar 4 15:31:59 toccata kernel: Partition check:
> > Mar 4 15:31:59 toccata kernel: hda: hda1 hda2 hda3 hda4 < hda5 hda6 hda7
> > hda8 hda9 hda10 >
> > ...
> > Mar 4 15:31:59 toccata kernel: SCSI subsystem driver Revision: 1.00
> > Mar 4 15:31:59 toccata kernel: scsi0 : SCSI host adapter emulation for
> IDE
> > ATAPI devices
> > Mar 4 15:31:59 toccata kernel: Vendor: MATSHITA Model: UJDA310
> > Rev: 3.53
> > Mar 4 15:31:59 toccata kernel: Type: CD-ROM
> > ANSI SCSI revision: 02
> > Mar 4 15:31:59 toccata kernel: Vendor: TEAC Model: CD-224E
> > Rev: 2.7B
> > Mar 4 15:31:59 toccata kernel: Type: CD-ROM
> > ANSI SCSI revision: 02
> > Mar 4 15:31:59 toccata kernel: Detected scsi CD-ROM sr0 at scsi0, channel
> > 0, id 0, lun 0
> > Mar 4 15:31:59 toccata kernel: Detected scsi CD-ROM sr1 at scsi0, channel
> > 0, id 1, lun 0
> > Mar 4 15:31:59 toccata kernel: sr0: scsi3-mmc drive: 20x/20x writer cd/rw
> > xa/form2 cdda tray
> > Mar 4 15:31:59 toccata kernel: Uniform CD-ROM driver Revision: 3.12
> > Mar 4 15:31:59 toccata kernel: sr1: scsi3-mmc drive: 24x/24x cd/rw
> xa/form2
> > cdda tray
> > ...
> >
> > I can't imagine the SR0 and SR1 device designations are meaningless--but I
> > don't see them in /dev.
> >
> > Any advice most appreciated.
> >
> >
> >
>
>
--
Janina Sajka, Director
Technology Research and Development
Governmental Relations Group
American Foundation for the Blind (AFB)
janina at afb.net
(202) 408-8175
http://www.afb.org/gov.html
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