fddisk man page on DigitalUNIX

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fddisk(8)							     fddisk(8)

NAME
       fddisk - FDI disk maintenance utility

SYNOPSIS
       /sbin/fddisk options special

OPTIONS
       Unless  this  option is specified, an attempt to format or to install a
       file system fails in two cases.	The  first  failure  occurs  when  the
       device  has been opened since the media was inserted.  The second fail‐
       ure occurs if the device is currently opened by another process.	  For‐
       mats the media to the density appropriate for that media.  Copies a hex
       dump of sector number PSN to stdout.  Uses the  interleave  factor  nnn
       for  formatting.	 If specified, ccc indicates an additional intercylin‐
       der interleave.	Copies a packed-C hex dump of the entire disk to  std‐
       out.  Specifies silent mode.  This option blocks informational messages
       from appearing on stderr.  Reads the entire media.  The	command	 fails
       if the utility finds a bad sector.  Waits for media to be inserted into
       the drive if none is present.  Waits for new media to be inserted  into
       the  drive  if  none is present or if the current media has been opened
       since it was last inserted.  Reads the disk and reports on  the	format
       of the disk.

OPERANDS
       Specifies  an  unmounted,  raw device pathname.	This device must be an
       FDI interface (fd).

DESCRIPTION
       The fddisk utility, an FDI  (integrated	Floppy	Disk  Interface)  disk
       maintenance  program,  can format a floppy disk, scan a floppy disk for
       bad blocks, and read and write selected blocks.	 It  can  be  used  in
       shell  scripts  for  checking  the status of floppy disks.  Such status
       checks include checking for or waiting for the presence of  media,  and
       checking for or waiting for the user to change the media.

RESTRICTIONS
       The  fddisk  utility  has  the  following  restrictions:	 You must have
       read/write access to the device.	 The device must not be mounted.   The
       program can only be used with a 3.5-inch floppy disk in the RX26 drive.
       In some cases, it might not be possible to format a floppy  disk	 at  a
       higher density than it is already formatted.  If this situation occurs,
       the floppy disk must be bulk erased before it can be reformatted	 at  a
       higher density.

EXAMPLES
       This  example  formats a floppy disk in drive zero: # /sbin/fddisk -fmt
       /dev/rdisk/floppy0a This example formats a floppy disk  in  drive  zero
       when  the  disk has been read or written since it was inserted into the
       drive: # /sbin/fddisk -fmt -f /dev/rdisk/floppy0a

SEE ALSO
       Commands: mount(8), restore(8), uerf(8)

       Files: fd(7)

								     fddisk(8)
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