Date   : Sat, 17 Feb 1990 05:41:17 GMT
From   : pasteur!helios.ee.lbl.gov!hellgate.utah.edu!cc.utah.edu!cc.usu.edu!slsw2@ucbvax.Berkeley.EDU (Roger Ivie)
Subject: 10 512-byte sectors/track (was RE: Kaypro...)

In article <1647@mipos3.intel.com>, dbraun@cadev5.intel.com (Doug Braun
~) writes:
> How is it that this format has 10 sectors per track, while IBM PCs
> have only 9 (and the old ones could only get 8 in)?

If you omit the soft index in the standard format you get enough space
to just squeeze in an extra sector IF your drive is within about 0.5%
of being on speed.

DEC did this for the RX50 (^&*#@&$ piece of trash). Unfortunately, the
drive is speced at 1.5% speed variation, so you are not guaranteed that
you can format a disk on the damn thing. If you complain, the field
service guys just swap drives until you get one that can format...
Of course, DEC did this single-sided 80 track, so you can only get
400K on a disk.

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Roger Ivie

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