Teac FD-55 Series - 204

(4) Track numbers
Same of commercially available 48tpi single sided FOOs can access only
35 tracks from track 00 to 34. And 35 track disks are used by same
people in a few application.
The operation of the FO-55A is guaranteed for track 00 through 39 <total
40 tracks). However, the data reliability of five tracks from 35 to 39
are not guaranteed when a 35 track disk is used.
Almost all the disks commercially available are guaranteed for up to
40 tracks.
(5) High density disk
For the high density FDD (FO-55G) which is put to practical use recently,
use an exclusive HO disko Da not use disks for FO-55A ~ F.
Generally, disks written by an FD-55A ~ F cannot be read by an FD-55G.
Da not use an HO disk with FO-55A ~ F. The da ta reliability may be
degraded.
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