29 Jul
2021
29 Jul
'21
9:45 a.m.
I have these 5-1/4" diagnostics disks but no need for them. If you're
interested, I'll send them to you for the cost of the postage from
Durham, NC.
* Diagnostics for IBM Personal Computer AT, ver. 2.03 copyright 1981, 1986
maroon disk label, p/n 6183111
* Advanced Diagnostics, ver. 2.20, copyright 1981, 1986
dark blue label, p/n 6139804
They are in excellent physical condition. Sorry, I don't have the manuals.
(I used to work for a ComputerLand store in '81-'82 and probably
acquired them there.)
They might be available for download somewhere, but these are the
physical, displayable versions.
**Richard
29 Jul
29 Jul
10:08 a.m.
Hi Richard,
I could use them if they are still available, I have the very nice
binder manual for them, minus the disks!
Thank You,
Mark
________________________________
From: cctalk <cctalk-bounces at classiccmp.org> on behalf of Richard Milward via
cctalk <cctalk at classiccmp.org>
Sent: Thursday, July 29, 2021 9:45 AM
To: Classic Computer <cctalk at classiccmp.org>
Subject: IBM PC diagnostics disks
I have these 5-1/4" diagnostics disks but no need for them. If you're
interested, I'll send them to you for the cost of the postage from
Durham, NC.
* Diagnostics for IBM Personal Computer AT, ver. 2.03 copyright 1981, 1986
maroon disk label, p/n 6183111
* Advanced Diagnostics, ver. 2.20, copyright 1981, 1986
dark blue label, p/n 6139804
They are in excellent physical condition. Sorry, I don't have the manuals.
(I used to work for a ComputerLand store in '81-'82 and probably
acquired them there.)
They might be available for download somewhere, but these are the
physical, displayable versions.
**Richard
10:15 a.m.
On 7/29/21 10:08 AM, Mark Huffstutter via cctalk wrote:
Hi Richard,
I could use them if they are still available, I have the very nice
binder manual for them, minus the disks!
Don't store diskettes in vinyl sleeves.
The plasticiser leaches out of the vinyl onto the surface of the diskettes.
11:22 a.m.
Yes, I sadly, learned that important lesson years ago, after finding My
"Original" Original PC DOS diskette set pretty much destroyed, left in
The folders in storage for too long.....
-----Original Message-----
From: cctalk [mailto:cctalk-bounces at classiccmp.org] On Behalf Of Al Kossow via cctalk
Sent: Thursday, July 29, 2021 10:15 AM
To: cctalk at classiccmp.org
Subject: Re: IBM PC diagnostics disks
On 7/29/21 10:08 AM, Mark Huffstutter via cctalk wrote:
Hi Richard,
I could use them if they are still available, I have the very nice
binder manual for them, minus the disks!
Don't store diskettes in vinyl sleeves.
The plasticiser leaches out of the vinyl onto the surface of the diskettes.
10 Aug
10 Aug
8:30 p.m.
On 7/29/2021 1:22 PM, Mark Huffstutter via cctech wrote:
Yes, I sadly, learned that important lesson years ago,
after finding My
"Original" Original PC DOS diskette set pretty much destroyed, left in
The folders in storage for too long.....
-----Original Message-----
From: cctalk [mailto:cctalk-bounces at classiccmp.org] On Behalf Of Al Kossow via cctalk
Sent: Thursday, July 29, 2021 10:15 AM
To: cctalk at classiccmp.org
Subject: Re: IBM PC diagnostics disks
On 7/29/21 10:08 AM, Mark Huffstutter via cctalk wrote:
Interesting. The IBM ones that I have had in the clear 5 x 8.5 vinyl
sleeves were in their paper-like material sleeves inside the vinyl.
They have been mostly just fine - just read them in this past week.
On the other hand maybe 10% or so of my 3B2 floppies that were similarly
stored, but in a somewhat different form of vinyl had more sector
errors. Fortunately I copied some of them (the most critical ones) some
time ago, and those were stored separately, so I expect those will be
fine, but I haven't yet read them in.
JRJ
Hi Richard,
I could use them if they are still available, I have the very nice
binder manual for them, minus the disks!
Don't store diskettes in vinyl sleeves.
The plasticiser leaches out of the vinyl onto the surface of the diskettes.
16 Aug
16 Aug
2:57 p.m.
On 8/10/2021 10:30 PM, Jay Jaeger via cctech wrote:
On 7/29/2021 1:22 PM, Mark Huffstutter via cctech
wrote:
Correction: Out of 49 AT&T floppies that were in their paper envelopes
inside vinyl exactly ONE turned out to actually be bad - and it had been
bad many years ago (1997) when I got them. So, to date I have not
experienced any issues with vinyl holders - so long as the floppy is in
its paper sleeve, at least.
The problem I actually discovered this week that I was not reading the
3B2 floppies on a 96 TPI drive (they are 512 byte sectors, 80 tracks,
two sides, 9 sectors "quad" density.) Once I figured that out, all but
the one read just fine. On the other hand, several copies I made on a
PC floppy drive (I think) back when were mostly bad (either that, or I
made them on the 3B2, but used HD media, perhaps).
One final note: why do I re-image stuff using different techniques?
Well, here is a case in point. The images that (I believe) I had made
of these floppies in 1997 - I think using dd on the 3b2 itself to files
on the hard disk, and then transferred using zmodem to my PC - were all
ONE TRACK SHORT. Now, there is a pretty good chance that that last
track on most of those floppies didn't have any real data - but one
never knows. I did verify that the first 79 tracks of those images, and
those I made the past couple of days were the same.
Using my new greaseweazle I have verified that images I made of PC
floppies of various sorts (160, 360, 720, 1.2M (including RT/PC),
1.44M), RX50 were all just fine. Only the 3B2 images were off.
JRJ
Yes, I sadly, learned that important lesson years
ago, after finding My
"Original" Original PC DOS diskette set pretty much destroyed, left in
The folders in storage for too long.....
-----Original Message-----
From: cctalk [mailto:cctalk-bounces at classiccmp.org] On Behalf Of Al
Kossow via cctalk
Sent: Thursday, July 29, 2021 10:15 AM
To: cctalk at classiccmp.org
Subject: Re: IBM PC diagnostics disks
On 7/29/21 10:08 AM, Mark Huffstutter via cctalk wrote:
Interesting. The IBM ones that I have had in the clear 5 x 8.5 vinyl
sleeves were in their paper-like material sleeves inside the vinyl. They
have been mostly just fine - just read them in this past week.
On the other hand maybe 10% or so of my 3B2 floppies that were similarly
stored, but in a somewhat different form of vinyl had more sector
errors.? Fortunately I copied some of them (the most critical ones) some
time ago, and those were stored separately, so I expect those will be
fine, but I haven't yet read them in.
JRJ Hi Richard,
???????????????????? I could use them if they are still available, I
have the very nice binder manual for them, minus the disks!
Don't store diskettes in vinyl sleeves.
The plasticiser leaches out of the vinyl onto the surface of the
diskettes.
1224
days inactive
1242
days old
5 comments
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participants (4)
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aek＠bitsavers.org -
cube1＠charter.net -
mhuffstutter＠outlook.com -
rsmilward＠frontier.com