Commodore PC 10 - Page 390

\252 MS-DOS User's Reference
Reconfiguring a
tape drive
Example:
Suppose your computer has an internal tape drive on drive D that
is configured
at startup to write 20 tracks of 40 sectors per track.
If you want to reconfigure this tape drive to write 10 tracks of 99
sectors each, you can put the following line in your config.sys file:
drivparm=/d:3 If:6 Ih:1 15:99 It:10
This command line overrides the default device driver settings, L'
and supports a tape drive as drive D (in this case the logical and
physical drive numbers are identical). This tape drive has 1 head
and supports a tape format of 10 tracks and 99 sectors per track. C
(This assumes that the device driver for the tape device supports
this configuration of tracks and sectors.) So, to create a tape that
you can read on another computer, one which can read only this .-
alternate format, you might want to use this method. L