Re: DSDD vs DSHD disks

[Roger Johnstone <rojaws@es.co.nz>]

Joel wrote:

> Of course, the real spec for an Apple II disk is SSSD.

Single-density? When I was still in school I had a floppy disk which 
used to give a lot of I/O errors. I was young and disks cost about the 
same as a box of them cost now (and this was circa 1987), so I continued 
to use it. Years later I came across the disk again and for the first 
time noticed the label. It was a single-density disk! Single-density 
5.25" drives that I've heard of typically got about 80KB on a disk.

> How do you tell them apart from DSDD?
> And it was common practice to flip the disks over and use both sides even
> though DS spec doesn't really call for the disks to be rotating the opposite
> direction.

You could buy special double-sided disks, complete with notchs on both 
sides. Supposedly they had a different jacket liner which wouldn't drop 
the dirt back onto the disk surface when the disk was flipped and it 
rotated the opposite way.

--
Roger Johnstone, Invercargill, New Zealand

Apple II - FutureCop:LAPD - iMac Game Wizard
http://homepages.ihug.co.nz/~rojaws/
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