7 Apr
2007
7 Apr
'07
6:29 p.m.
On 4/7/07, Steven N. Hirsch <shirsch at adelphia.net> wrote:
On Thu, 5 Apr 2007, Sridhar Ayengar wrote:
Tandon 262
Miniscribe 8425
The infamous Kalok Octagon KL-230
There were probabably a few others. I doubt there were any 3.5"
drives over 40 MB, though.
John Kourafas wrote:
I have an extensive collection of MFM/RLL drives and have _never_ run
across one with that interface in a 3.5" form-factor. Not sure that
anything of this sort existed. 5.25" 1/2-ht. was about as sophisticated
as they got. Also looking for a Micropolis 1325 MFM Drive,
71/80MB , I've seen both the
ST506 and Mic. 1325 on eBay for like 600.00 which I think is crazy...
What's the largest capacity 3.5" MFM HDD available? The largest MFM drive ever made was _probably_ the
Maxtor 2190 at 190MB
unformatted. ISTR that there was a logical limit to the number of
cylinders due to the control protocol (or perhaps limitations in the PC
BIOSes of the time) and physical limits to the number of sectors/cylinder
and the number of platters (the 2190 had 15 or 17?)
That's certainly close to the largest, if not the absolute largest.
DEC took the XT2190 and formatted it at 154MB as the RD54. I have a
few in MicroVAXen. Much more solid than the RD53 (Micropolis 1325),
and no jumper moving required (there's a single solderable jumper that
must be installed to turn a generic 1325 into an RD53 so that the
customer-runnable formatter recognizes it).
-ethan