Micropolis 1578 on SS1+

[xyzzy!stukenborg at dg-rtp.dg.com]

Has anyone had any luck installing a Micropolis 1578-15 (380MB) drive on a
Sparcstation 1+?  I have brought up the machine diskless, but I can not
get "format" to successfully format the virgin disk.  No matter what disk
geometry parameters I give, I always get errors when it writes the backup
label.

For example:

Number of cylinders:	1200
Alternate cylinders:	   2
Number of heads:	  15
Sectors/track:		  35 

The SCSI format seems to proceed normally, but when (I assume) "format"
tries to label the disk, the following warnings are printed.

Block 631016  (1201/14/1), Fatal non-media error (illegal request)
Warning: error writing backup label.
Block 631018  (1201/14/3), Fatal non-media error (illegal request)
Warning: error writing backup label.
Block 631020  (1201/14/5), Fatal non-media error (illegal request)
Warning: error writing backup label.
Block 631022  (1201/14/7), Fatal non-media error (illegal request)
Warning: error writing backup label.
Block 631024  (1201/14/9), Fatal non-media error (illegal request)
Warning: error writing backup label.
Label failed.

Any insight you could give would be very much appreciated.
Steve Stukenborg
Data General Corporation
62 Alexander Drive			stukenborg at dg-rtp.dg.com
Research Triangle Park, NC  27709	...!mcnc!rti!xyzzy!stukenborg