Re: 5.25 Inch Disk Data Recovery

Good call - you beat me to that one Valdis.  Atari used to do the same 
thing - along with a limited number of wordprocessor machines.  There 
was a company in Germany that sold a set of floppy drives that were 
somewhat universal. Through software one could reconfigure the drive in 
order to read these goofy formats.  I'll get back with you if I can dig 
up that vendor.

If anyone reading this is at the DCFL - I know you guys have one.  We 
bought it back in '96 and used it _maybe_ once. It had the word "cat" 
in the name. It's probably in the same pile of hardware with the 
beowulf switches.  :)

-- Matt

On Aug 25, 2004, at 2:16 PM, Valdis.Kletnieks@vt.edu wrote:

> On Mon, 23 Aug 2004 07:47:41 PDT, sety martin said:
> > I am trying to recover data from some 5.25 inch disks.
> >  They came off an older Apple system. (Apple 2?).
>
> I seem to recall that Apple played some funny games with the
> floppies - rather than a constant angular velocity and 18 blocks
> on each track inside to outside, they had a drive motor that
> could change speeds, so they ran constant *linear* velocity,
> got 18 blocks/track on the innermost tracks, and a bit higher
> on the middle tracks, and something like 30 blocks/track on the
> outermost tracks.
>
> If this is the case, you'll need hardware/software that's capable of
> doing the Apple speed tricks....


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