11 Jun
2005
11 Jun
'05
7:21 p.m.
Would a DSHD floppy drive with a DSHD disk in it look like a 5.25"
DSQD drive to an Altos 580? IOW, could I just plug it in and go?
Doc
11 Jun
11 Jun
8 p.m.
Doc Shipley declared on Saturday 11 June 2005 06:21 pm:
Would a DSHD floppy drive with a DSHD disk in it
look like a 5.25"
DSQD drive to an Altos 580? IOW, could I just plug it in and go?
That's a good question. I think that as long as the Altos uses the SA400
(?) floppy bus (like the DSHD drive), it probably will work. I've
read/written DSQD disks using a DSHD floppy drive on a PC just fine.
I'd just give it a shot, you're unlikely to break anything. :)
Pat
--
Purdue University ITAP/RCAC --- http://www.rcac.purdue.edu/
The Computer Refuge --- http://computer-refuge.org
8:15 p.m.
Patrick Finnegan wrote:
Doc Shipley declared on Saturday 11 June 2005 06:21
pm:
Crap. I just realized I have to find a 3.5" drive with ID jumpers.
That may very well be a showstopper.
Doc
Would a DSHD floppy drive with a DSHD disk in
it look like a 5.25"
DSQD drive to an Altos 580? IOW, could I just plug it in and go?
That's a good question. I think that as long as the Altos uses the SA400
(?) floppy bus (like the DSHD drive), it probably will work. I've
read/written DSQD disks using a DSHD floppy drive on a PC just fine.
I'd just give it a shot, you're unlikely to break anything. :) 
8:52 p.m.
Doc asks:
Would a DSHD floppy drive with a DSHD disk in it
You mean a 96 TPI high-density 5.25" disk and drive (e.g., IBM 1.2M format
that was introduced with the PC/AT)?
look like a 5.25" DSQD drive to an Altos 580?
IOW, could I just plug it in and go?
By DSQD you mean a 96 TPI standard-density double-side drive?
If so, not reliably. You should use a standard-density floppy diskette
in the high-density drive; that should work fine.
Eric
9:01 p.m.
Eric Smith wrote:
Doc asks:
Sorry, no, I meant a 3.5" floppy drive. As soon as Allison replied I
realized the question was ambiguous.
I've found something intersting about the Compaq m/b that hosts my
1.2MB 5.25" disk drive, though.
That board auto-detects all its hardware on every boot. If I boot
with a DSQD disk in that drive, the BIOS auto-updates the settings to
'3.5" 1.44MB Drive".
Which is what prompted my question in the first place.
Doc
Would a DSHD floppy drive with a DSHD disk in
it
You mean a 96 TPI high-density 5.25" disk and drive (e.g., IBM 1.2M format
that was introduced with the PC/AT)? 
12 Jun
12 Jun
10:28 a.m.
On Sat, 11 Jun 2005 20:01:12 -0500
Doc Shipley <doc at mdrconsult.com> wrote:
Eric Smith wrote:
Years back, I had good luck using a 720K (DSDD) 3-1/2" drive in place of
the 720K '80 track' 5-1/4" drive in an Intel PDS workstation. I
'converted over' all the original media from 5-1/4" by installing the 3
and 5 inch drives in a 'dual drive' configuration then ran the disk copy
utility.
Blank new 720K 3-1/2" media itself has become scarce now, though.
Doc asks:
Sorry, no, I meant a 3.5" floppy drive. As soon as Allison replied
I
realized the question was ambiguous.
I've found something intersting about the Compaq m/b that hosts my
1.2MB 5.25" disk drive, though.
That board auto-detects all its hardware on every boot. If I boot
with a DSQD disk in that drive, the BIOS auto-updates the settings to
'3.5" 1.44MB Drive".
Which is what prompted my question in the first place.
Doc Would a DSHD floppy drive with a DSHD disk in
it
You mean a 96 TPI high-density 5.25" disk and drive (e.g., IBM 1.2M
format that was introduced with the PC/AT)?
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5 comments
4 participants
participants (4)
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chenmel＠earthlink.net -
doc＠mdrconsult.com -
eric＠brouhaha.com -
pat＠computer-refuge.org