3.25-inch floppies

Chuck Guzis cclist at sydex.com
Fri Nov 2 19:33:30 CDT 2007


On 2 Nov 2007 at 23:59, Tony Duell wrote:

> > Only as far as type and utility goes.  A modern 3.5" drive is just as 
> > useful as an old Sony 0AD SS 3.5" drive, even if it only spins at 300 
> 
> Not if you're restoring an HP drive unit, or an Apricot, or... it isn't!

I wonder if a DSHD 3.5" drive could simply be persuaded to spin the 
diskette twice as fast--they certainly run just fine at 360 RPM.  
I've never had to address the 2X issue (I'm more interested in 
reading disks from the old gear than restoring the old gear).  

Some of the old duplicator equipment used 2X and 4X drives, so 
there's another source for you.

Or the FDC clock rate could be halved and a normal drive be used.

Cheers,
Chuck




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