G.3. Kernel Options
The following kernel options can be specified in
/etc/lilo.conf as well as on the boot command line:
- append=string
Appends the options specified in string to the parameter line
passed to the kernel. This is typically used to
specify certain hardware parameters. For example, if your system has more
than 64 MB of memory (i.e., more than your BIOS can recognize), you can
use append:
append = "mem=128M"
- initrd=filename
Specifies the file to load into /dev/initrd when booting with
a RAM disk. See also the options load_ramdisk, prompt_ramdisk,
ramdisk_size, and ramdisk_start.
- literal=string
Is like append, but replaces all other kernel boot options.
- noinitrd
Preserves the contents of /dev/initrd so they can be read once
after the kernel is booted.
- prompt_ramdisk=n
Specifies whether the kernel should prompt you to insert the floppy disk
that contains the RAM disk image, for use during Linux installation.
Values of n are:
- 0
Don't prompt. Usually used for an installation where the kernel and the
RAM disk image both fit on one floppy.
- 1
Prompt. This is the default.
- ramdisk=size
Is obsolete. This option should be used only with kernels older than Version 1.3.48.
For newer kernels, see the options load_ramdisk, prompt_ramdisk,
ramdisk_size, and ramdisk_start.
- ramdisk_size=n
Specifies the amount of memory, in kilobytes, to be allocated for the RAM
disk. The default is 4096, which allocates 4 MB.
- ramdisk_start=offset
Used for a Linux installation where both the kernel and the RAM disk image
are on the same floppy. offset indicates the offset on the floppy
where the RAM disk image begins; it is specified in kilobytes.
- root=root-device
Specifies the device that should be mounted as the
root. If the special name current is used, the
root device is set to the device on which the root
filesystem is currently mounted. This option defaults to the root-device
setting contained in the kernel image.
- vga=mode
Specifies the VGA text mode that should be
selected when booting. mode defaults to the VGA mode setting in the kernel
image. The values are not case-sensitive. They are:
- ask
Prompts the user for the text mode. Pressing Enter in response to the prompt
displays a list of the available modes.
- extended (or ext)
Selects 80x50 text mode.
- normal
Selects normal 80x25 text mode.
- number
Uses the text mode that corresponds to number. A list
of available modes for your video card can be obtained by booting with
vga=ask and pressing Enter.
| | | G.2. Image Options | | G.4. lilo Command Options |
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