                     CHEATCODES AND HINTS FOR GRML V0.9
==============================================================================

These options (can be combined) work from the isolinux bootprompt:

grml                                Use default settings (same as just pressing return)
memtest                             Run Memtest86+ instead of Linux
expert    [options...]              Interactive setup for experts
fb1280x1024                         Use fixed framebuffer graphics and X resolution (1)
fb1024x768                          Use fixed framebuffer graphics and X resolution (2)
fb800x600                           Use fixed framebuffer graphics and X resolution (3)
nofb                                Disable framebuffer
floppy                              Boot from floppydisk
hd / hd1 / hd2 / hd3                Boot from (local) primary / secondary /... harddisk
failsafe                            Boot with (almost) no HW-detection
debug                               Get shells during process of booting for debugging
bootchart                           Create chart of booting sequence in /var/log/bootchart.tgz
forensic                            Do not touch any harddisks during hardware recognition
splash                              Text based bootsplash
serial                              Activate ttyS0 and start mgetty
dos                                 Start FreeDOS 1.0
grub                                Boot into the Grub bootloader
vmware                              Boot with special options for use in VMware

Important: if you notice any problems with one of the
following options please report it to the grml-team:
http://grml.org/bugs/

Regional settings:
------------------
grml lang=at|de|cn|da|es|fr|it      Specify language ($LANG, $LC_ALL, $LANGUAGE) + keyboard
grml lang=nl|pl|ru|sk|tr|tw|us      Specify language ($LANG, $LC_ALL, $LANGUAGE) + keyboard
grml lang=$LANG-utf8                Activate $LANG (use like in lines above) with utf8
grml gmt                            Use GMT-based time
grml tz=Europe/Vienna               Use this timezone for TZ
grml keyboard=us xkeyboard=us       Use different keyboard layout (text-console/X)
grml setkeycodes                    Set some special function keys for MS/HP keyboards

Configuration settings:
-----------------------
grml myconfig=/dev/fd0              Execute "grml.sh" and extract config.tbz from a partition:
                                    /dev/fd0  for floppy disk
                                    /dev/sda1 for USB-stick/first SCSI-device
grml netconfig=server/config.tbz    Download file and extract configuration archive
grml partconf=/dev/hda2             Copy files specified in /etc/grml/partconf from /dev/hda2
                                    to booting grml system
grml file=foobar.tbz                Use specified file as name for configuration archive
                                    instead of the default one (config.tbz)
grml extract=/etc                   Extract only /etc from configuration archive,
                                    use it in combination with myconfig or netconfig
grml home=/dev/hda2                 Mount specified partition as grml homedir
grml home=/dev/sda1/grml.img        Mount loopback file as /home/grml
grml home=scan                      Automatic search for grml homedir (using file grml.img)
grml hostname=...                   Set hostname
grml debnet                         Search through local partitions for file /etc/network/interfaces,
                                    copy /etc/network to local system and restart networking then

Notice: Take a look at http://grml.org/config/ and
/usr/share/doc/grml-saveconfig/grml-config.html
for more information regarding the configuration
framework of grml.

Booting related options:
------------------------
grml toram                          Copy CD to RAM and run from there
grml tohd=/dev/hda1                 Copy CD to HD partition and run from there
grml fromhd                         Skip checking for grml on CD-ROM
grml fromhd=/dev/hda1               Boot from previously copied CD-Image
grml bootfrom=/dev/hda1             Access Image then boot from previously
                                    copied CD-Image
grml bootfrom=/dev/hda1/GRML.iso    Access image, boot from ISO-Image.
grml grml_dir=GRML                  Directory to search for on the CD.
grml grml_name=GRML                 SquashFS-File to search for on the CD.

Debugging related settings:
---------------------------
debug                               Get shells during process of booting
grml nocolor                        Disable colorized output while booting
grml log                            Log error messages while booting and
grml testcd                         Check CD data integrity and md5sums

Service related settings:
-------------------------
grml ssh=password                   Set password for user grml and start ssh-server
grml nosyslog                       Do not start syslog-ng
grml nogpm                          Disable GPM daemon
grml noblank                        Disable console blanking
grml small                          Do not start that many consoles
grml wondershaper=eth0,1000,500     Set up basic traffic shaping
grml services={postfix,mysql,...}   Start service(s) which have an init-script (/etc/init.d/)
grml welcome                        Welcome message via soundoutput
grml noeject                        Do NOT eject CD after halt/reboot
grml noprompt                       Do NOT prompt to remove the CD when halting/rebooting the system
grml distcc=$NETWORK,$INTERFACE     Activate distcc-daemon to listen on specified network
                                    and interface, usage example:
                                    distcc=192.168.0.1/24,eth0
grml gcc=3.4 gpp=3.4                Link /usr/bin/gcc, /usr/bin/cpp and /usr/bin/c++ to specified version
grml startx{=windowmanager}         Start X window system automatically.
                                    Default window manager (if not provided): wm-ng (wrapper around fluxbox)

Accessibility related settings:
-------------------------------
grml blind                          Start Braille-Terminal (no X)
grml swspeak                        Prepare system for use with software synthesizer through speakup
                                    Run 'swspeak' after booting up to activate sound output.
grml brltty=type,port,table         Parameters for Braille device (e.g.: brltty=al,/dev/ttyS0,text.de.tbl)
grml speakup_synth=...              Use speakup kernel module with given hardware type

Hardware related settings:
--------------------------
grml swap                           Activate present/detected swap partitions
grml noswraid                       Disable scanning for software raid arrays (creates /etc/mdadm/mdadm.conf)
grml swraid                         Enable automatic assembling of software raid arrays
grml scandelay[=seconds]            Delay accessing ISO-device (useful for booting via usb/firewire)
grml xmodule=ati|fbdev|i810|mga     Use specified X.org-Module (1)
grml xmodule=nv|radeon|savage|s3    Use specified X.org-Module (2)
grml xmodule=radeon|svga|i810       Use specified X.org-Module (3)
grml no{acpi,agp,apm,cpu,dhcp}      Skip parts of HW-detection (1)
grml no{dma,fstab,modem}            Skip parts of HW-detection (2)
grml no{pcmcia,scsi,swap,usb}       Skip parts of HW-detection (3)
grml 915resolution=...              Start resolution modify tool for Intel graphic chipset
                                    usage: $MODE,$XRESO,$YRESO
grml blacklist=modulename           Completely disable loading of specified module via
                                    blacklisting through /etc/modprobe.d/grml
grml fwtimeout=50                   Set firmware timeout via /sys/class/firmware/timeout to specified value
grml nosound                        Mute sound devices (notice: this does not deactivate loading of sound drivers!)
grml vol=number                     Set mixer volumes to level $number
grml pnpbios=off                    No PnP Bios initialization
grml acpi=off                       Disable ACPI Bios completely
grml nousb2                         Disable initialization of USB 2.x controller(s)
grml nousb                          Disable initialization of USB in booting sequence
grml nofirewire                     Disable initialization of firewire devices in booting sequence
grml pci=irqmask=0x0e98             Try this, if PS/2 mouse doesn't work *)
grml pci=bios                       Workaround for bad PCI controllers
grml ide2=0x180 nopcmcia            Boot from PCMCIA-CD-ROM (some notebooks)
grml mem=128M                       Specify Memory size in MByte
grml dma                            Enable DMA accelleration for ALL IDE-Drives
grml nodma ide=nodma                Disable DMA accelleration for ALL IDE-Drives
grml vga=normal [video=ofonly]      No-framebuffer mode (does not influence X)
grml vga=ask [video=ofonly]         Display menu for framebuffer mode


Addition notes:
---------------

*) Try "grml pci=irqmask=0x0e98" if (you have a notebook and) your
PS/2 mouse doesn't work. (Possibly caused by a BIOS-flaw on your board,
BIOS updates can help.) Sometimes, switching to the text console with
Control-Alt-F1 and back to the X-screen with Control-Alt-F7 solves the
problem without rebooting, since the X server reinitializes the mouse
driver during that procedure.

*) Bootfrom needs access to a running grml-System with the same Kernel
as the Bootkernel, before it is able to mount the partition / ISO-Image.
This should allow a poor mans install from NTFS-Partitions and makes it
also possible to boot an ISO-Image directly. You can also use wildcards
in the ISO-Filename, but it must be unique. So: If you have just one
grml.iso on /dev/hda1 you can access it as: bootfrom=/dev/hda1/G*.iso,
but if there are several, you need to make clear, which one you want.
(Feature added by Fabian Franz.)

*) If your grml-CD makes strange noises during boot, or you see frequent
errors like "squashfs: read error", or programs are crashing randomly,
then your CD image is probably defective or incomplete, or your CD-burner
created a defective CD due to wrong writing speed or bad media. This is
the most common error reported.  Please boot with "grml testcd" to check
if the CD is OK, and/or even better, verify the MD5 checksums that are
present on the mirrors before writing the CD.  Check your CD low-level
via running 'readcd -c2scan dev=/dev/cdrom'. In some cases, defective
IDE controllers cause this error if you have DMA enabled. Also, please
read the grml-FAQ.

*) In case of a failing hardware autodetection, try booting with any of
the "no-" options as shown in the table above, like in
   grml noagp noapm noapic acpi=off nodma
to skip some critical parts of the autodetection system.

*) Some boards apparently don't pass the proper memory size to the
linux-kernel. It may cause the message "Panic: cannot mount root file
system" and the system hangs. Use "grml mem=128M" to solve that
problem if your system has 128MByte memory for example (caution:
you MUST use a capital "M" here).

*) The "expert" mode provides a very simple interface to loading additional
Kernel modules from floppy disks (ext2 or vfat), plus interactive
configuration of mouse/keyboard/xserver. "expert" mode supports
the same boot options as "grml".

*) The "myconfig=/dev/partition" option allows you to reconfigure the
system after autoconfiguration by running a bourne shell script called
"grml.sh" and/or extracting configuration files from a file named
config.tbz from the root directory on the given device (or floppy).
Take a look at http://grml.org/config/ for more information regarding
the configuration framework of grml.

*) If you wish to remaster the CD, please don't forget to specify

        -no-emul-boot -boot-load-size 4 -boot-info-table \
        -b boot/isolinux/isolinux.bin -c boot/isolinux/boot.cat

as option to mkisofs. Otherwise your CD won't be bootable. The
directory GRML, containig the compressed filesystem file "GRML",
must be located in the top level directory of the CD.

*) Caution: screensavers: Don't start xlock/vlock or any other screensaver
that requires a password. There are no default passwords on grml,
i.e. all accounts are LOCKED unless you explicitly set a password.
See also README_Security.txt about this issue.
Hint: If you accidentially started a screensaver switch to one of the
textconsoles by Control-Alt-F1 and kill the screensaver (or just set a
password for the grml user). Take a look at the script grml-lock.

# EOF
