The Question is:
Attempting to use NEC Multispin 4X CDrom (SCSI) drive on Alpha 3000/300LX
"SHOW DEVICE" command can see the drive.
1) Cannot boot from drive ("BOOT DKA400").
2) After booting from another drive, the MOUNT
command (MOUNT/OVER=ID DKA400) fails with
transfer request posted
3) MOUNT/FOREIGN works OK, and then
4) DUMP DKA400 works OK, dumps blocks OK.
Is this a known problem with this drive; is there a workaround?
Note that this drive holds 7 CDs...these appear
as DKA400, DKA401, DKA402, etc. MOUNT/FOREIGN
and DUMP have no trouble reading from any "drive".
The Answer is :
Please acquire a supported CD-ROM device -- the OpenVMS Wizard
is not in a position to provide the quantity of time and effort
that can be involved in ensuring a valid configuration and
ensuring the correct operation of OpenVMS with an arbitrary
storage device. (This includes Compaq and third-party storage
devices; any devices that are lacking formal OpenVMS support.)
The device qualification and testing process used for OpenVMS
can identify changes ranging from the trivial -- clearly not the
case here -- to changes to the hardware and/or to the software.
This assumes that correct operation of the device can be verified
and that any necessary additions or changes can be added in a
compatible and cost-effective manner.
Details on some of the known requirements for Compaq and third-party
SCSI CD-ROM devices -- salient among these is a requirement for
512-byte block transfer support -- are listed in the OpenVMS FAQ.