DF(4)                   COMMAND REFERENCE                   DF(4)



NAME
     df - standard floppy disk driver for 6130 System
     workstations

DESCRIPTION
     The df device provides access to the standard on-board
     flexible disk drive.  It uses 5 1/4 inch, double-sided,
     double density soft-sectored pre-formatted flexible disks.
     Formatted flexible disks contain 48 tracks per inch, 9
     sectors per track and 512 bytes per sector.  The disks are
     compatible with IBM PC disks.

     Device naming conventions specify a two-letter description
     of the device, followed by the slot number, followed by the
     drive number.  The slot number and drive number for integral
     devices are 0.   The standard name for the flexible disk is
     df00. The flexible disk may also be accessed in character
     (raw) mode.  The character device name is the block name
     with an "r" prefixed.  Standard device names df and rdf are
     linked to df00 and rdf00, respectively, for ease of use.

     It is possible to make make a file system on a floppy, using
     mkfs, and mount the file system, using mount.  Care must be
     taken if this is done because the removal of a floppy
     diskette while it is mounted may cause a loss of data on any
     diskette subsequently inserted in the floppy.  It could even
     cause UTEK to panic.

     I/O requests must begin on a sector boundary and must avoid
     going beyond the end of the disk.

FILES
     /dev/df00, /dev/df       block files

     /dev/rdf00, /dev/rdf     raw files

DIAGNOSTICS
     The following errors may be returned.

     [EBUSY]
         Drive not ready (on a read or write).

     [ENXIO]
         Nonexistent drive (on open); or (on a read or write)
         offset is too large or not on a sector boundary.

     [EIO]
         A physical error other than ``not ready''.

SEE ALSO
     open(2), mknod(2), diskpart(5), mkfs(8), mount(8).




Printed 10/17/86                                                1

%%index%%
na:72,102;
de:174,1490;
fi:1664,172;
di:1836,381;
se:2217,170;
%%index%%000000000096