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X-Hacker.org- Peter Norton Programmer's Guide - Norton Guide
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The diskette formats listed in Figure 5-2 aren't the only ones you can
use for diskettes, but because diskettes are intended to be portable, the
number of diskette formats that DOS recognizes is limited to those in the
list. In the earliest releases of DOS, only the 160 KB and 320 KB formats
could be used. Later DOS versions recognize higher-capacity diskette
formats and fixed disks in addition to the original diskette formats
(Figure 5-3).
Disk Capacity DOS Version Media Descriptor
--------------------------------------------------------------------------
51/4-inch diskette 160 KB 1.0 FEH
320 KB 1.1 FFH
180 KB 2.0 FCH
360 KB 2.0 FDH
1.2 MB 3.0 F9H
31/2-inch diskette 720 KB 3.2 F9H
1.44 MB 3.3 F0H
Fixed disk 2.0 F8H
--------------------------------------------------------------------------
Figure 5-3. Standard DOS disk formats. The media descriptor value is used
by DOS to identify different disk formats.
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