Xref: utzoo comp.sys.dec:974 comp.periphs:1474
Path: utzoo!attcan!uunet!husc6!cfa!ward
From: ward@cfa.harvard.EDU (Steve Ward)
Newsgroups: comp.sys.dec,comp.periphs
Subject: DEC RD52 alias Quantum Q540 Disk Drive
Keywords: NON-DEC MFM DISK CONTROLLER USE
Message-ID: <1394@cfa.cfa.harvard.EDU>
Date: 23 Jan 89 19:22:51 GMT
Organization: Harvard-Smithsonian
Lines: 19


I have a DEC RD52 disk drive.  The disk drive is made by Quantum and
is also the Q540 Quantum disk drive.  The drive is an ST506 MFM
type.

The drive works fine on my MicroVAX II using the RQDX2 controller.
I have tried to install the drive on a standard MFM disk controller
on a PC computer, but the controller always sees the drive as
offline or not ready.

Does anyone know of any "DECism" modification to the drive that must
be undone before I can use it with normal MFM controllers?

For example, I had the same identical problem with a DEC RD53 disk
drive (really Micropolis 1325) until a jumper was removed from the
drive printed circuit board, so there may be something similar to
undo with the RD52.

Thanks,   Steve W.     ...harvard!cfa!ward    ward@cfa.harvard.edu