Section: System Administration (8)
Updated: June 2020
fdformat - low-level format a floppy disk
does a low-level format on a floppy disk.
is usually one of the following (for floppy devices the major = 2, and the
minor is shown for informational purposes only):
- /dev/fd0d360 (minor = 4)
/dev/fd0h1200 (minor = 8)
/dev/fd0D360 (minor = 12)
/dev/fd0H360 (minor = 12)
/dev/fd0D720 (minor = 16)
/dev/fd0H720 (minor = 16)
/dev/fd0h360 (minor = 20)
/dev/fd0h720 (minor = 24)
/dev/fd0H1440 (minor = 28)
/dev/fd1d360 (minor = 5)
/dev/fd1h1200 (minor = 9)
/dev/fd1D360 (minor = 13)
/dev/fd1H360 (minor = 13)
/dev/fd1D720 (minor = 17)
/dev/fd1H720 (minor = 17)
/dev/fd1h360 (minor = 21)
/dev/fd1h720 (minor = 25)
/dev/fd1H1440 (minor = 29)
The generic floppy devices, /dev/fd0 and /dev/fd1, will fail to work with
when a non-standard format is being used, or if the format has not been
autodetected earlier. In this case, use
to load the disk parameters.
- -f, --from N
Start at the track N (default is 0).
- -t, --to N
Stop at the track N.
- -r, --repair N
Try to repair tracks failed during the verification (max N retries).
- -n, --no-verify
Skip the verification that is normally performed after the formatting.
- -V, --version
Display version information and exit.
- -h, --help
Display help text and exit.
This utility does not handle USB floppy disk drives. Use
Werner Almesberger (email@example.com
The fdformat command is part of the util-linux package and is available from