controller.
In the following device tables, \fIn\fP represents the
drive number.
-.PP
+.P
\fBWarning: if you use formats with more tracks
than supported by your drive, you may cause it mechanical damage.\fP
Trying once if more tracks than the usual 40/80 are supported should not
damage it, but no warranty is given for that.
If you are not sure, don't create device
entries for those formats, so as to prevent their usage.
-.PP
+.P
Drive-independent device files which automatically detect the media
format and capacity:
.TS
_
\fBfd\fP\fIn\fP 0
.TE
-.PP
+.P
5.25 inch double-density device files:
.TS
lw(1i) l l l l c
_
\fBfd\fP\fIn\fP\fBd360\fP 360 40 9 2 4
.TE
-.PP
+.P
5.25 inch high-density device files:
.TS
lw(1i) l l l l c
\fBfd\fP\fIn\fP\fBh1494\fP 1494 83 18 2 72
\fBfd\fP\fIn\fP\fBh1600\fP 1600 80 20 2 92
.TE
-.PP
+.P
3.5 inch double-density device files:
.TS
lw(1i) l l l l c
\fBfd\fP\fIn\fP\fBu1040\fP 1040 80 13 2 84
\fBfd\fP\fIn\fP\fBu1120\fP 1120 80 14 2 88
.TE
-.PP
+.P
3.5 inch high-density device files:
.TS
lw(1i) l l l l c
\fBfd\fP\fIn\fP\fBu1840\fP 1840 80 23 2 116
\fBfd\fP\fIn\fP\fBu1920\fP 1920 80 24 2 100
.TE
-.PP
+.P
3.5 inch extra-density device files:
.TS
lw(1i) l l l l c
.TP
.B FDRAWCMD
sends a raw command to the floppy controller.
-.PP
+.P
For more precise information, consult also the \fI<linux/fd.h>\fP and
\fI<linux/fdreg.h>\fP include files, as well as the
.BR floppycontrol (1)
performance may drop,
to the point of needing a few seconds to access an entire track.
To prevent this, use interleaved formats.
-.PP
+.P
It is not possible to
read floppies which are formatted using GCR (group code recording),
which is used by Apple II and Macintosh computers (800k disks).
-.PP
+.P
Reading floppies which are hard sectored (one hole per sector, with
the index hole being a little skewed) is not supported.
This used to be common with older 8-inch floppies.