Hello All!

(Here is some additional info about 5.25" floppies)

For 5.25" floppies it was less messy than 3.5". The basic formats were:
160k - 1 Sides 40 Tracks 8 Sec/Track  180k - 1 Sides 40 Tracks 9 Sec/Track
320k - 2 Sides 40 Tracks 8 Sec/Track  360k - 2 Sides 40 Tracks 9 Sec/Track
640k - 2 Sides 80 Tracks 8 Sec/Track  720k - 2 Sides 80 Tracks 9 Sec/Track
1.2m - 2 Sides 80 Tracks 15 Sec/Track

The 2 most common formats with more sectors/track were: 11 s/t (880k - used
on 720k floppies) and 20 s/t (1.6m - used on 1.2 floppies).

There were 2 pretty popular formats with additional tracks in the 360k days:
41 and 42 tracks (410k and 420k) And 2 less popular used on 1.2 floppies -
82 and 83 tracks (1.48m and 1.49m)

Best Regards, Viktor (aka BlackDew)
 - bdew{at}mail.ru - 2:400/567 - ICQ 15553279 -

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