Date   : Sun, 12 Jun 1983 11:08:16 EDT
From   : WOHL@cmu-cs-c
Subject: DSDD disk formats

In writing controller software for a 1791 controller I used the read entire
track (including gaps and format information) to make sure that I wrote the
format code correctly.  Using 8 1K byte sectors per track I noticed that there
was enough space left after the last sector for another one.  This gives an
additional 144K bytes (77 tracks*2 sides*1024 bytes).  I tried it and it works
fine, the only change needed besides the format module was to change the
diskdef macro in my bios to say '1,72' sectors rather than '1,64'.

Why do the comercialy available 1K sector implementations use 8 sectors/track?
       Aaron