UNRM(1)							  UNRM(1)

NAME
       unrm - disk data recovery

SYNOPSIS
       unrm [-bev] [-f fstype] device [start-stop ...]

DESCRIPTION
       unrm  opens  the	 named device and copies data blocks.  By
       default, unrm copies unallocated data blocks only.

       Arguments:

       -b     With file systems that  have  logical  blocks  that
	      consist	of   fragments,	 don't	insert	null-byte
	      padding to preserve logical block alignment in  the
	      output.	This  option  is  a  no-op with the LINUX
	      ext2fs file system, where logical blocks and  frag-
	      ments have the same size.

       -e     Copy  every  block. The output should be similar to
	      dd(1).

       -f fstype
	      Specifies the file system type.  The  default  file
	      system  type  is	system	dependent. With most UNIX
	      systems the default type is ufs (Berkeley fast file
	      system).	With  Linux  the  default  type is ext2fs
	      (second extended file system).

       -v     Turn on verbose mode.

       device Disk special file, or  regular  file  containing	a
	      disk  image.  On UNIX systems, raw mode disk access
	      may give better performance than	block  mode  disk
	      access.	LINUX  disk  device  drivers support only
	      block mode disk access.

       start-stop ...
	      Examine the specified block number or number range.
	      Either  the  start,  the	stop, or the -stop may be
	      omitted.	If -b is not specified, the  start  block
	      must be aligned to a logical block boundary (e.g. a
	      multiple of 8 in the case of an FFS  file	 system).
	      With  the LINUX ext2fs file system, the start block
	      number must be >= 1.

BUGS
       unrm should support more file  system  types.  Right  now,
       support	is limited to ext2fs when built on Linux, and ufs
       when built on Solaris and BSD systems.

LICENSE
       This software is distributed under the IBM Public License.

AUTHOR(S)
       Wietse Venema
       IBM T.J. Watson Research
       P.O. Box 704
       Yorktown Heights, NY 10598, USA





























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