CHEATCODES AND HINTS FOR GRML V0.6 ============================================================================== 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 serial Activate ttyS0 and start mgetty 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 gmt Use GMT-based time grml tz=Europe/Vienna Use this timezone for TZ grml keyboard=us xkeyboard=us Use different keyboard (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 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. 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 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 nosyslog Do not start syslog-ng grml nogpm Disable GPM daemon 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 grml noprompt Do NOT prompt to remove the CD 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=3.3 gpp=3.3 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 'speechd-up' after booting up to activate sound output. grml brltty=type,port,table Parameters for Braille device grml speakup_synth=... Use speakup kernel module with given hardware type Hardware related settings: -------------------------- grml scandelay[=seconds] delay accessing ISO-device (useful for 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 nosound Mute sound devices 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 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 *) 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. 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 nodisc noagp noapm noapic acpi=off nodma nopcmcia 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" options allow you to reconfigure the system after autoconfiguration by running a bourne shell script called "grml.sh" from the root directory on the given device (or floppy). The shell script will also be executed at startup. 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: X-Screensaver: Don't start xlock or any screensaver that require 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. 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!