Very Computer

I bought a few days ago a new PIONEER DR-U124X-4 ( SCSI-II device ).

My problem is that I could not read (mount) any iso9660-CD-ROM
under DOS (EZ-SCSI) either under my favourite Operating-System LINUX95.
Playing an audio-CD works with the PLAY-button in front of the
drive but not if I use cdplayer.exe under EZ-SCSI (DOS). There is
a strange message reported by the program: NO-CD! ,status ejected.
(But there is still an audio-CD inside, really!).
The SCSI-devices are both detected under Linux and DOS.

I have the following SCSI hostadapter and devices:
==================================================================
| AHA1542B (I/O-adress: 330, IRQ:12, DMA-channel:5, SCSI-ID: 7)  |
| VDS Support Level: MultiSegRV                                  |
==================================================================
| Host Adapter #0 - SCSI ID 0 - LUN 0: Disk Device               |
==================================================================
| Device Information             3 Miscellaneous                 |
|   Vendor ID  : IBM             3   Device Type : SCSI-2        |
|   Product ID : DPES-31080      3   Capacity    : 1034 MByte    |
|   Revision   : S31H            3   Bytes/Sector:  512 Byte     |
==================================================================
|  SCSI-Features                                                 |
|    [x] Synchronous Mode          [ ] WIDE SCSI (16-bit)        |
|    [x] SCSI Linking              [ ] WIDE SCSI (32-bit)        |
|    [x] Command Queuing                                         |
==================================================================
| Host Adapter #0 - SCSI ID 2 - LUN 0: CD-ROM Device             |
==================================================================
| Device Information             3 Miscellaneous                 |
|   Vendor ID  : PIONEER         3   Device Type : SCSI-2        |
|   Product ID : CD-ROM DR-124X  3   Capacity    : not mounted   |
|   Revision   : 1.00            3   Bytes/Sector: not mounted   |
==================================================================
|  SCSI-Features                                                 |
|    [x] Synchronous Mode          [ ] WIDE SCSI (16-bit)        |
|    [ ] SCSI Linking              [ ] WIDE SCSI (32-bit)        |
|    [ ] Command Queuing                                         |
==================================================================

Termination of devices:
=======================
The drive is in the middle of a SCSI chain.
The Hostadapter and the disk are terminated, the CD-ROM not.

I have also tried the following combinations:

1. No CD-ROM (this works as before).
2. No disk, CD-ROM (terminated) at the end of the SCSI-chain.
3. No disk, CD-ROM (not-terminated) at the end of the SCSI-chain.
4. No disk, CD-ROM (terminated) at the end of the SCSI-chain, different
   SCSI-cable.
5. Hostadapter, disk and CD-ROM are terminated.

No of this combination works under DOS either under LINUX.

Under LINUX I have iso9660-filesystem support as well as SCSI-CD-ROM
support compiled in the Kernel (at boot-time this is reported directly
after the kernel has detected the CD-ROM drive, detected
scsi CD-ROM scd0 at scsi 0, id 2, lun0). I also
checked this with the commands:
            cat /proc/devices
            cat /proc/filesystems

If I use a bootdisk to start Slackware (S.u.S.e-Distribution, german)
and I select to install from SCSI-CD-ROM, Slackware tells me:

            wrong fs type or bad superblock

Also my Logitech Mouseman does't work under X11, if the CD-ROM
is in the SCSI-chain (strange, I must check that again).

My other hardware is ISA-VL-Motherboard (486DX2-66MHz, 16MB RAM) with a
VL-IDE-Controller, IDE-SEAGATE harddisk , ET4000/W32 (Graphics) and
SoundBlaster Pro (I/O-address:220, IRQ: 5, DMA-channel: 1).

----
So, has there any one of those great LINUX-experts an idea?
Thank you very much !

                      Manfred

=========================================================
| Manfred Schuermann                                    |

=========================================================

I have the PIONEER DR-UA124X ATAPI IDE CDROM drive, and I have a similiar
problem with Linux, although everything works fine in DOS/WINDOWS. I wonder
if you have tried enableing/disableing the Parity on the controller/CDROM
drive? I used to have a NED CDROM drive that would do what your describing
because my controller was set to parity and my drive had only no-parity.

That my not be it at all, but there is definately a problem with this drive
under Linux, I have talked with several people on the net that are experiencing
the same problem...