====== 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.

==== ext2/ext3 ====

  * 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

==== ReiserFS/Reiser4 ====

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

==== XFS ====

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

==== JFS ====

  * jfsutils: utilities for managing the JFS filesystem





==== NTFS ====

  * 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 =====

__Preliminaries__ 

  * 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
     <code>
     </>hpiLO-> power on
     # or
     </>hpiLO-> power reset
     </code>
  * Start VSP
     <code>
     </>hpiLO-> vsp
     </code>
  * Press [ESC] [9] to start RBSU (Bios)
     <code>
     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
     </code>

__Insert remote GRML CD image on webserver__

  * Apache grml image webserver
<code>
mkdir /tmp/iloimg
cat > iloimg-httpd.conf <<HERE
ServerRoot "/tmp/iloimg"
DocumentRoot "/tmp/iloimg"
User nobody
Group nobody
PidFile /tmp/iloimg/httpd.pid
ErrorLog error.log
Listen *:5555
HERE
# copy grml iso image to /tmp/iloimg
/usr/sbin/httpd -f /tmp/iloimg/iloimg-httpd.conf -k start
</code>

  * ILO Settings
    <code>
    </>hpiLO-> vm cdrom get
    </>hpiLO-> vm cdrom insert http://xxx.xxx.xxx.xxx:5555/grml_2009.05.iso
    </>hpiLO-> vm cdrom set boot_always
    </>hpiLO-> power warm
    </code>

  * 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.