21 Apr
2005
21 Apr
'05
10:14 p.m.
On Apr 21, 2005, at 10:12 PM, Saquinn624 at aol.com wrote:
Dont know if this is common knowledge, but I have a
VS3100/76 that I
threw a
2gig IBM drive in, tried to put VMS on and - it worked. All the stuff
I saw
seemed to indicate that 3100s didn't like sysdisks over 1 gig, but my
/76
doesn't seem to mind.
There it is if it's useful
Scott Quinn
This was at the time very annoying. We wanted to use what turned out
to be affected systems as boot nodes for LAN-based clusters and were
trying to use bigger disks. ("Damned disks work on Viking controllers
on the 3200's! WTF is wrong with these 3100's ?!?!?") Funny now... :-)
The actual problem was that "Early" MicroVAX 3100 and VaxStation 3100
boot ROMs use 6-byte SCSI READ and WRITE commands which limit access
to 1.06GB.
At some point VS3100-76's (and later) came fixed from the factory. I
don't remember when MicroVAX 3100's were fixed. I *think* DEC released
a fix for some models of MV3100's, but never for VS3100's.
VS4000's never had this problem.
To make life easier, a very unofficial fix was created and is still
available here: ftp://ftp.gwdg.de/pub/vms/ka420/
There's a README and the patches are in ka420-rom-patch_010.zip
Mike