The wrap-up:
So I got the data off the drive. :)
One issue is it turns out the drive is a bit flaky. I'm not sure how
much of the issue is heat, and how much is tilt. I had done most of my
fiddling with the drive perched in places that weren't quite flat, and I
think these old drives must h
On Tue, 02 Feb 2010 08:01:41 -0500 Daniel Malament
wrote:
> > Alternatively, can disktab be used? The documentation is not
> > entirely transparent
> > on this, but it does appear that disktab might be able to override
> > BIOS parameters.
>
> Apparently not. disktab looks like it's mostly used
On Tue, Feb 2, 2010 at 12:19 PM, Daniel Malament wrote:
>> I think my first course of action would be to use DOS, or possibly OS/2,
>> to
>> override the disk geometry, unless the disk has data on it that can only
>> be
>> accessed from OpenBSD. Yes, I know it's intellectually more fun to get
>> O
Alternatively, can disktab be used? The documentation is not entirely
transparent
on this, but it does appear that disktab might be able to override BIOS
parameters.
Apparently not. disktab looks like it's mostly used by disklabel. It
turns out disklabel with -e will let you edit the geometr
From: "Daniel Malament"
To: "Peter Kay (Syllopsium)"
I think my first course of action would be to use DOS, or possibly OS/2,
to
override the disk geometry, unless the disk has data on it that can only
be
accessed from OpenBSD. Yes, I know it's intellectually more fun to get
OpenBSD to do it,
I think my first course of action would be to use DOS, or possibly OS/2, to
override the disk geometry, unless the disk has data on it that can only be
accessed from OpenBSD. Yes, I know it's intellectually more fun to get
OpenBSD to do it, but for a one off with little practical future use I
thi
From: "Daniel Malament"
Subject: Re: MFM disk geometry
Try looking for "Total Hardware '99" - your controller might be
documented in there.
Nice! Thanks.
http://th99.dyndns.org/c/C-D/20069.htm
Unfortunately, it doesn't look like it's actually all that c
Try looking for "Total Hardware '99" - your controller might be
documented in there.
Nice! Thanks.
http://th99.dyndns.org/c/C-D/20069.htm
Unfortunately, it doesn't look like it's actually all that configurable.
Although I don't know what some of those settings actually mean. Does
anyone e
On Tue, Feb 2, 2010 at 4:23 PM, Daniel Malament wrote:
>> holy cow.
>> of all the times NOT to post a dmesg! (and fdisk output). It
>> probably wouldn't help diagnose the problem, but it would be cool to
>> see. :) Obviously, you got a PIII machine with ISA slots, not the
>> most common of beas
"Results 1 - 10 of about 25,100 for Seagate ST225", possibly the most
common 20MB 1/2 height MFM drive.
Google is my friend. It could be your friend, too.
I seem to recall that LBA and fake geometry and related stunts could
be done on the controller. At least I recall a "Promise" IDE
controller
holy cow.
of all the times NOT to post a dmesg! (and fdisk output). It
probably wouldn't help diagnose the problem, but it would be cool to
see. :) Obviously, you got a PIII machine with ISA slots, not the
most common of beasts (though they certainly exist). (actually, the
dmesg would probably
Daniel Malament wrote:
> I'm trying to pull data off an old MFM HD, and I've gotten to the point
> where the only obstacle is disk geometry. I have a P3 machine which
> will disable the primary IDE controller in favor of the MFM controller,
> but boot off of an OpenBSD disk on the secondary IDE
On Mon, 01 Feb 2010 11:17:33 -0500
Daniel Malament wrote:
> I'm trying to pull data off an old MFM HD, and I've gotten to the
> point where the only obstacle is disk geometry. I have a P3 machine
> which will disable the primary IDE controller in favor of the MFM
> controller, but boot off of an
I'm trying to pull data off an old MFM HD, and I've gotten to the point
where the only obstacle is disk geometry. I have a P3 machine which
will disable the primary IDE controller in favor of the MFM controller,
but boot off of an OpenBSD disk on the secondary IDE. OpenBSD sees the
MFM disk j
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