FORMAT.1
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- .TH FORMAT 1
- .SH NAME
- format - format a PC floppy diskette
- .SH SYNOPSIS
- .B format
- .RB [ -v ]
- .I device
- .RI [ media-size
- .RI [ drive-size ]]
- .SH DESCRIPTION
- .de SP
- .if t .sp 0.4
- .if n .sp
- ..
- .B Format
- allows a user with read-write permission to
- .I device
- to format a floppy. Either one of the special floppy devices must be used,
- see
- .BR fd (4),
- or an automatic device may be used with the size of the floppy specified on
- the command line. Two sizes must be given when formatting a low density
- diskette in a high density drive. For example:
- .PP
- .RS
- .ft B
- .nf
- format /dev/at1
- format /dev/fd1 1200
- format /dev/fd1 360 1200
- .fi
- .ft P
- .RE
- .PP
- The first two commands format a 1.2M diskette, the last formats a 360k
- diskette in a 1.2M drive. A 1.44M drive knows when it's dealing with a low
- density floppy, so all these commands format a 720k diskette:
- .PP
- .RS
- .ft B
- .nf
- format /dev/fd0 720
- format /dev/fd0 720 1440
- format /dev/ps0
- .fi
- .ft P
- .RE
- .PP
- No sizes may be specified when using a special floppy device, a size must be
- specified when using an automatic device.
- .SH OPTIONS
- .TP
- .B -v
- Verify the process by reading each track after formatting it. Formatting is
- normally blind, the controller has no idea whether it succeeds or not. Use
- .B -v
- on a new box of cheap diskettes, or on a diskette that may have gone bad.
- Verifying will increase formatting time by 50%.
- .SH "SEE ALSO"
- .BR mkfs (1),
- .BR fd (4).
- .SH DIAGNOSTICS
- Numbers will be printed on standard output to show that it is busy. The
- locations of bad sectors are printed on standard error when verifying. The
- exit code is zero unless there are too many bad spots.
- .SH AUTHOR
- Kees J. Bot (kjb@cs.vu.nl)