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MKRESCUE(8)									      MKRESCUE(8)

NAME
       mkrescue - make rescue floppy

SYNOPSIS
       /sbin/mkrescue - make a bootable rescue floppy or CD using the default kernel specified in
       lilo.conf.

DESCRIPTION
       mkrescue takes its specifation  for  the  kernel  from  the  default  image  specified  in
       /etc/lilo.conf.	 If  the  actual  default  is an other= specification, then use the first
       image= specification.  Any associated initial ramdisk (initrd=), and append= options  will
       also be used.  The root directory will be taken to be the current root.	A bootable floppy
       or CD-image will be created  using  LILO  version  22.5.5  or  later.   mkrescue  normally
       requires no options, unless a CD-image is desired (--iso).

OPTIONS
       --append <string>
	      Override	any  append= options taken from the default image.  If there is any doubt
	      about whether the lilo.conf options are correct, then specify no kernel  parameters
	      with:  --append "", the null string.

       --debug
	      Provide verbose output of the operation of "mkrescue", pausing to allow the setting
	      of internal operating parameters to be viewed.  "<CR>" must be hit to proceed  from
	      these pauses.

       --device <device>
	      Make  the  floppy  on a device other than /dev/fd0.  The floppy disk will always be
	      made to boot on BIOS device code 0x00 (A: drive), without regard to  the	drive  on
	      which it is created.

       --fast Use  a  faster  method of creating the boot floppy.  This involves first creating a
	      file of "--size" 1k blocks (default is 1440) mounted using a loopback device,  cre-
	      ating the bootable floppy, then copying the entire file to the disk.

       --fs [ ext2 | msdos | minix ]
	      Specify  the  type  of filesystem to create on the drive.  ext2 is the default, but
	      "msdos" and "minix" allow slightly more disk sectors for really big kernels.

       --help Print a short usage synopsis, including a list of command options.

       --image <label>
	      Specifies the label or alias of the particular image from which the append, initial
	      ramdisk, root, keytable, and kernel information is to be taken.

       --initrd <filepath>  and  --kernel <filepath>
	      These  options,  which  must  be used together, allow specification of an arbitrary
	      kernel file and initial ramdisk file to be used on the  created  boot  floppy.   Be
	      sure  you  know  what  you  are  doing  before you use these options.  If no inital
	      ramdisk is needed with a particular kernel, then	you  MUST  specify  --initrd  "",
	      meaning a null pathname.

       --install [ text | menu ]
	      Allows overriding the default human interface used with the rescue bootloader (con-
	      figuration file "install=" option). "text" is  the  default  on  1.2MB  and  1.44MB
	      floppy disks, and "menu" is the default on 2.88MB floppies and HD emulation on CD-R
	      media.

       --iso  Create an ISO-9660 bootable CD image (El Torito Format) suitable for burning  to	a
	      CD-R  or	CD-RW.	The --device specification defaults to the filename "rescue.iso",
	      and the --size defaults to 2880.	A utility such as cdrecord may be  used  to  burn
	      the ISO file to a recordable CD medium.  With this ISO option, the --size HD option
	      is allowed.

       --nocompact
	      For faster kernel loading from a floppy, LILO map compaction is  normally  enabled.
	      This option will disable map compaction by omitting the lilo "-c" switch.

       --noformat
	      Suppresses creation of a new filesystem on the boot floppy. This option may be used
	      only when you know that the floppy you will be writing upon is formatted	with  the
	      same filesystem as specified by "--fs XXX" (default is ext2).

       --root <device>
	      Specify  the  root  filesystem  for  the	kernel	on the boot floppy. The currently
	      mounted root is taken as the default specification.

       --size [ 1440 | 1200 | 2880 | HD ]
	      The default floppy disk size is 1440, meaning a 1.44MB floppy. When --iso is speci-
	      fied,  the  default  size is 2880.  Allowed specifications are 1200, 1440, or 2880,
	      meaning a 1.2MB, 1.44MB or 2.88MB floppy, respectively.  No other floppy disk sizes
	      are supported.

	      The  HD specification, meaning "hard disk", may only be used with the --iso option,
	      to indicate a 16MB hard disk is to be generated for  emulation.	This  allows  for
	      very  large  kernel / initial ramdisk combinations on CD-R.  The hard disk image is
	      created using loopback devices "/dev/loop0" and "/dev/loop1", which must be free to
	      utilize this size option.

       --version
	      Print the version number of mkrescue, then terminate.

SEE ALSO
       lilo(8), lilo.conf(5), mkfs(8), dd(1), mount(8), mkinitrd(8), mkisofs(8), cdrecord(1).

AUTHOR
       John Coffman <johninsd@san.rr.com> (3.0)

					   16 Nov 2004				      MKRESCUE(8)
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