Tandy 1000 MS-DOS Reference Manual page 124

Chapter 6 / Command Reference
Press the space bar. HFORMAT displays:
Formatting cylinders
When the format is done without error, each dash, which rep-
resents an area on the disk, becomes a period. A question
mark in place of a period indicates that a portion of the disk
contains flawed areas. HFORMAT locks out these areas so
that MS-DOS never writes to them.
When the format is complete, MS-DOS displays this message:
nnnnnnnn bytes total disk space
nnnnnnnn bytes in bad sectors
nnnnnnnn bytes available on disk
Examples
hfor ma
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s [ENTER
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formats Drive C and transfers the system files to it. After
removing the Drive A diskette and resetting your computer, you
can start up your system under hard disk control.
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