[comp.sys.amiga] disk drive woes.

carpent@coltrane.SRC.Honeywell.COM (Todd Carpenter) (05/08/89)

Hello.  'Tis I again.  Wouldst the mighty powers deign to inform a lowly
peasant of the proper paths to pursue?

Problem: I purchased a Rodime ST506 drive.  5MHz, 90MB.  It is not one of the
Rodime drives listed in the A2090a manual.  I do a Prep, reboot, and I get a
"not a DOS device in Unit 1" So, I leave it off line, and once my machine is
running, I switch it on, mount and format it.  That works fine (heads move, it
takes forever, lights flash, etc).  Once it is done, I again see the bad news
about it not being a DOS device.  I played games with the mountlist to no
avail.

I also have ARP1.3 installed.  Is this possibly an ARP problem?  I heard
people mentioning ARP MOUNT problems, but wasn't paying attention.

I heard rumors that it is *possible* that old versions of the 2090a ROMs had a
couple instructions out of whack that would conceivably lead to timing problems
with certain Rodime ST506 drives.  So, before I do hardware whacking, could
someone:

 1) If you know, tell me if my A2090a ROMs are the "conceivably troublesome"
 version (and where to get new ones)
 2) If I'm hosed, and should go back to playing with floppies and bit of
 colored string instead of real computers, lemme know.
 3) Inform me of other options.  Like, a screwed disk.

A2090a:
 GX B-VO 8841
 FAB No: 311981
 Assy No: 311979
 JA 0024088
 
 My board:                   It was reported that a new board has:
 U50: 315098-01 2090 AB5C    
 U51: 315097-01 2090 D32B    
 U36: 309230-02 2090 3145    390230-03 2090a 2FEF

Disk: Ro5090, 5Mhz, 90 MB. ST506

Rest of system:
 B2000 (rev 4.4)
 A2620       (which works great!  Buy one for your kids.)
 Rodime SCSI (ditto)
 WB 1.3
 ARP 1.3

email, if you please.  Don't want to restart rumor wars on the net again.

Todd P. Carpenter          Honeywell Systems and Research Center
voice:  (612)782-7229      paper:  3660 Technology Drive, Minneapolis, MN 55418
UUCP: carpent@srcsip.uucp  bang-style: {umn-cs,ems,bthpyd}!srcsip!carpent
Internet: carpent@src.honeywell.com or carpent@altura.honeywell.com