BootOptions
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Comment: Added a how to get to the boot options in grub, and the what next section
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| === How to get to the menu where you enter this data === | == How to get to the menu where you enter this data == |
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| === Options for the boot command line. === | == Options for the boot command line. == |
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==== Option: vga=771 ==== Impact: Helps where there are problems with laptop screens. |
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| === What next? === | == What next? == |
How to get to the menu where you enter this data
Assumption you are using grub, this article does not deal with lilo.
As the machine starts to boot you get a Grub message, at this time press the ESC key. This drops you to a console menu. Choose the boot option you want to work with. Navigate using the the down arrow. (Cursor key.)
When you have selected the menu item please press this key:
e |
Then you will be presented with "root" as the first line, (all things being equal). You must then move to the "kernel line" one down from there with the down arrow. then again you press this key:
e |
goto the end of the line and add the command from below.
Press the enter key.
Press the following key:
b |
Your machine should hopefully boot.
Options for the boot command line.
This list is not comprehensive but it contains some of the common options. When presented with the text on the screen "boot: " then the options below can be given. They must have the kernel name before the option. e.g. boot: linux noacpi Options can be used together.
Option: vga=771
Impact: Helps where there are problems with laptop screens.
Option: noacpi
Impact: Does not start the Advanced Configuration and Power Interface (ACPI). Can prevent the impact of bad ACPI implementations, which in turn cause random reboots or system lockups.
Option: noapic nolapic
Impact: A broken "Advanced Programmable Interrupt Controller" may work with this option. They usually randomly freeze machines or produce repetitive messages about IRQ issues.
Option: debian-installer/framebuffer=false
Impact: Disable framebuffer.
Option: hw-detect/start_pcmcia=false
Impact: Don't start PCMCIA. Personal Computer Memory Card International Association, one of the stranger names for a piece of hardware. 
Your hardware is an association.
Option: netcfg/disable_dhcp=true
Impact: Force static network config.
Option: bootkbd=uk
Impact: Set keyboard map. Use a two letter ISO country code to get the right letters on the right keys. This option can help with password problems.
What next?
You need to add the successful instruction to the menu. This is done by editing the file /boot/grub/menu.lst.
To to this please do the following:
sudo nano /boot/grub/menu.lst |
Add the command to the kernel lines as you need to. Default and recovery are a good start.
BootOptions (last edited 2008-08-06 17:00:04 by localhost)