24 May
1999
24 May
'99
9:18 a.m.
On May 24, 18:34, Tony Duell wrote:
Old _working_ ST506 hard disks, however small in
capacity should be kept
IMHO. They may be useless in PCs, but there are plenty of machines that
can use such drives but can't use IDE/SCSI/whatever. And it's getting
ever harder to get working ST506 drives.
Having just spent several days obtaining a suitable 20MB ST506-interface
hard drive, I completely concur with Tony. The 3.5" versions seem to be
particularly hard to come by around here.
--
Pete Peter Turnbull
Dept. of Computer Science
University of York
24 May
24 May
9:38 a.m.
On Mon, 24 May 1999, Pete Turnbull wrote:
Having just spent several days obtaining a suitable
20MB ST506-interface
hard drive, I completely concur with Tony. The 3.5" versions seem to be
particularly hard to come by around here.
There have been 3.5" ST-506 interface hard drives?
--Max Eskin (max82(a)surfree.com)
http://scivault.hypermart.net: Ignorance is Impotence - Knowledge is Power
8:31 a.m.
Date: Mon, 24 May 1999 17:38:47 -0400 (EDT)
Reply-to: classiccmp(a)u.washington.edu
From: Max Eskin <max82(a)surfree.com>
To: "Discussion re-collecting of classic computers"
<classiccmp(a)u.washington.edu>
Subject: Re: Space, the next frontier
X-To: Discussion re-collecting of classic computers
<classiccmp(a)u.washington.edu>
On Mon, 24 May 1999, Pete Turnbull wrote:
Oh yes! They DO exists. Ditto to 3.5" and 5.25" with IDE on it.
Miniscribe, Microscience, Seagate, and knock-off clones of
ST225/ST251 in 3.5" factor form too closely to "seagate's"!
Most of them die fast due to poor cooling and poor design.
Wizard
Having just spent several days obtaining a
suitable 20MB ST506-interface
hard drive, I completely concur with Tony. The 3.5" versions seem to be
particularly hard to come by around here.
There have been 3.5" ST-506 interface hard drives? 
12:40 p.m.
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1:15 p.m.
On Mon, 24 May 1999, Pete Turnbull wrote:
One of the most common brands was the old miniscribe and the Tandon
I've got here (252?) as a spare for my Panasonic Sr. Partner.
Bill
---
bpechter@shell.monmouth.com|pechter@pechter.dyndns.org
Three things never anger: First, the one who runs your DEC,
The one who does Field Service and the one who signs your check.
Having just spent several days obtaining a
suitable 20MB ST506-interface
hard drive, I completely concur with Tony. The 3.5" versions seem to be
particularly hard to come by around here.
There have been 3.5" ST-506 interface hard drives?
--Max Eskin (max82(a)surfree.com)
http://scivault.hypermart.net: Ignorance is Impotence - Knowledge is Power 
25 May
25 May
9:13 a.m.
Max Eskin wrote:
On Mon, 24 May 1999, Pete Turnbull wrote:
Yep, They where put on a frame that included the MFM-controller (or RLL
for that matter). This frame was put into a full length IBM-PC slot.
They were sold as "Hardcards with usually 20MB (MFM) OR 30MB (RLL)
capacity. I still have a few of these drives but I don't trust all of
them and The Netherlands is far away shipping wise.
Sipke de Wal
Having just spent several days obtaining a
suitable 20MB ST506-interface
hard drive, I completely concur with Tony. The 3.5" versions seem to be
particularly hard to come by around here.
There have been 3.5" ST-506 interface hard drives?
9:25 a.m.
On Tue, 25 May 1999, Sipke de Wal wrote:
Yep, They where put on a frame that included the
MFM-controller (or RLL
for that matter). This frame was put into a full length IBM-PC slot.
Oh, hard cards. I was envisioning separate drives. Were there any of
these?
--Max Eskin (max82(a)surfree.com)
http://scivault.hypermart.net: Ignorance is Impotence - Knowledge is Power
7:41 a.m.
Date: Tue, 25 May 1999 17:25:36 -0400 (EDT)
Reply-to: classiccmp(a)u.washington.edu
From: Max Eskin <max82(a)surfree.com>
To: "Discussion re-collecting of classic computers"
<classiccmp(a)u.washington.edu>
Subject: Re: Space, the next frontier
X-To: Discussion re-collecting of classic computers
<classiccmp(a)u.washington.edu>
Max scribbled:
Oh, hard cards. I was envisioning separate drives.
Were there any of
these?
Even designed hardcards! (looks like black frame with plastic black
sides, one side is embossed in capacity size and brand is HD, green
circuit card) Impulse Plus (Quantum took it) used an nonstandard
card (in fact really similar to LPS series in that same period and
size capacity) with everything on it and hd bare just connections
between (opposite of IDE idea of all stuff on HD and nothing on card
to the slot.) From 10MB and 20 (platters coated w/ iron oxide and
epoxy), 50, 105, 240MB all last 3 are plated platters. All used
optical grating/read back from track to anlign heads.
Quantum HD's larger than 240MB dropped optical grating technologies I
think. Which is good thing to help seek times and cut expenses.
Wizard
3:26 p.m.
On Tue, 25 May 1999, Max Eskin wrote:
On Tue, 25 May 1999, Sipke de Wal wrote:
Hard cards, in fact, had separate drives and separate controllers. They
were just in a common (ISA compatible) housing.
- don
Yep, They where put on a frame that included the
MFM-controller (or RLL
for that matter). This frame was put into a full length IBM-PC slot.
Oh, hard cards. I was envisioning separate drives. Were there any of
these? --Max Eskin (max82(a)surfree.com)
http://scivault.hypermart.net: Ignorance is Impotence - Knowledge is Power
24 May
24 May
10:39 a.m.
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25 May
25 May
9:22 a.m.
Tony Duell wrote:
XT/PC RLL/MFM controllers sometimes have a setup program that can cater
for more than one geometry. Use debug and jump to c800:000x where x can
be anything from 0-8. You might see a harddisk lowlevel
configuration/formatting utility.
c800 = c800 when the controller ROM was mapped there by default but some
systems may have that altered.
Sipke de Wal
On May 24, 18:34, Tony Duell wrote:
Several days? That's pretty quick.... I've spent months looking for
working ST506-interfaced drives in the past....
Old _working_ ST506 hard disks, however small in
capacity should be kept
IMHO. They may be useless in PCs, but there are plenty of machines that
can use such drives but can't use IDE/SCSI/whatever. And it's getting
ever harder to get working ST506 drives.
Having just spent several days obtaining a suitable 20MB ST506-interface hard drive, I completely concur with Tony. The
3.5" versions seem to be
particularly hard to come by around here.
The other 'nasty' is machines that will only take a limited number of
hard disk types (geometries). Sometimes only 2 or 3 drives are supported,
and you can bet that they'll either be almost impossible to find a drive
with all parameters in excess of the ones needed, or it will actually
verify that the drive has the specified geometry (e.g. checking that a '6
head' drive doesn't work when heads >5 are selected). Getting the right
spare drive for one of those can really drive you insane.
9:28 a.m.
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9343
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11 comments
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ard＠p850ug1.demon.co.uk -
donm＠cts.com -
jpero＠pop.cgocable.net -
max82＠surfree.com -
pechter＠pechter.dyndns.org -
pete＠dunnington.u-net.com -
sipke＠wxs.nl