Use grml as a rescue system

data/partition handling

unsorted tools

  • dd: convert and copy a file
  • ddrescue: copies data from one file or block device to another
  • partimage: Linux/UNIX utility to save partitions in a compressed image file
  • cfdisk: Partition a hard drive
  • nparted: Newt and GNU Parted based disk partition table manipulator
  • parted-bf: The GNU Parted disk partition resizing program, small version
  • testdisk: Partition scanner and disk recovery tool
  • gpart: Guess PC disk partition table, find lost partitions
  • autopsy:(frontend to the sleuth kit) finds deleted and existing data on alocated and unallocated space on virtually every filesystem.


  • e2fsprogs: ext2 file system utilities and libraries
  • e2tools: utilities for manipulating files in an ext2/ext3 filesystem
  • e2undel: Undelete utility for the ext2 file system
  • ext2resize: an ext2 filesystem resizer
  • recover: Undelete files on ext2 partitions


  • reiser4progs: administration utilities for the Reiser4 filesystem
  • reiserfsprogs: User-level tools for ReiserFS filesystems


  • xfsdump: Administrative utilities for the XFS filesystem
  • xfsprogs: Utilities for managing the XFS filesystem


  • jfsutils: utilities for managing the JFS filesystem


  • ntfsprogs: tools for doing neat things in NTFS partitions from Linux
  • salvage-ntfs: free NTFS data recovery tools
  • scrounge-ntfs: data recovery program for NTFS file systems
  • ntfsresize: resize ntfs partitions
  • chntpw: list users (-l), reset password of a given user (-u), etc

Example Boot GRML Rescue System on HP Proliant Servers


  • Access to the server via ILO (ssh)
  • Access to a webserver (optional; for remote grml image)

Configure ILO VSP to COM1

  • Ssh to ilo
  • Power on server or reset server
     </>hpiLO-> power on
     # or
     </>hpiLO-> power reset
  • Start VSP
     </>hpiLO-> vsp
  • Press [ESC] [9] to start RBSU (Bios)
     rbsu> SET CONFIG Embedded Serial Port COM 2; IRQ3; IO: 2F8h-2FFh
     rbsu> SET CONFIG Virtual Serial Port COM 1; IRQ4; IO: 3F8h-3FFh
     rbsu> SET CONFIG BIOS Serial Console Port COM 1; IRQ4; IO: 3F8h-3FFh
     rbsu> SET IPL CD 1
     rbsu> EXIT

Insert remote GRML CD image on webserver

  • Apache grml image webserver
mkdir /tmp/iloimg
cat > iloimg-httpd.conf <<HERE
ServerRoot "/tmp/iloimg"
DocumentRoot "/tmp/iloimg"
User nobody
Group nobody
PidFile /tmp/iloimg/
ErrorLog error.log
Listen *:5555
# copy grml iso image to /tmp/iloimg
/usr/sbin/httpd -f /tmp/iloimg/iloimg-httpd.conf -k start
  • ILO Settings
    </>hpiLO-> vm cdrom get
    </>hpiLO-> vm cdrom insert
    </>hpiLO-> vm cdrom set boot_always
    </>hpiLO-> power warm
  • Or if the server has an cdrom drive, simply insert grml cd

Start GRML with serial console

  • GRML 2009.05:
  Just type "serial" at grml boot loader prompt
  • GRML 2009.10:
  Press [ESC] to show up grml boot loader prompt on vsp and than "serial"

* GRML 2017.05 on a host with a “real” serial port

  • open grml.iso with a hex editor such as dhex on linux
  • search for the string “vesamenu bootsplash” to find the isolinux.cfg inside the image
  • remove the # in front of “serial 0 9600”
  • replace “vesamenu.cfg” with “console.cfg”
  • If you can't see a prompt on the serial console after booting, you might have attached too late. Hit [TAB] to redisplay the prompt.
rescue.txt · Last modified: 2017/11/09 08:56 by zugschlus
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