[Coco] 3.5" Drive Variable in the NitrOS-9 Module Header

[Bill Pierce]

Bruce,
The only purpose behind this was a temp fix due to the fact my PC drive wouldn't read the 720k disks (or drives) properly. And yes, there were many reformats and recopies, but it worked to get the files to the PC. The originals were still intact on 720k disks. I think it also depends on how new the drive is as well. The newer 720ks (at the time) had less errors and the older 1.44megs errored less as well. At the time I had about 20 3.5 drives from various old IBMs and Packard Bells. Some 720k and some 1.44meg. Some worked, some didn't. This wasn't meant to assume a norm, but a quick temp fix when nothing else worked.

Bill P

Music from the Tandy/Radio Shack Color Computer 2 & 3
https://sites.google.com/site/dabarnstudio/
Bill Pierce
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-----Original Message-----
From: Bruce W. Calkins <brucewcalkins at charter.net>
To: CoCoList for Color Computer Enthusiasts <coco at maltedmedia.com>
Sent: Sun, Jan 27, 2013 2:07 pm
Subject: Re: [Coco] 3.5" Drive Variable in the NitrOS-9 Module Header


----- Original Message ----- 
From: "Bill Pierce"

> Also, to use a 3.5" 1.44m disk as 720k, you could cover the "HD" id hole 
> on the disk and the drive would recognize the disk as 720k. The hole was 
> opposite of the write protect slider. I used the old write protect 
> stickers from 5.25" disks for this. If the disk had been "factory 
> formatted" for IBM, most times you needed to use a bulk eraser to clear 
> the disk because the drive eraser wasn't strong enough to erase those 
> "factory formatted" disks.
>
> Bill P


I tried this and they were unstable.

Bruce W. 


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