Additional Boot Options For Ibm Power Systems - Red Hat ENTREPRISE LINUX 5 Installation Manual

Chapter 15.
Additional Boot Options for IBM Power
Systems
This section discusses additional boot and kernel boot options available for the Red Hat Enterprise
Linux installation program.
To use any of the boot options presented here, type the command you wish to invoke at the installation
boot: prompt.
Boot Time Command Arguments
askmethod
this command asks you to select the installation method you would like to use when booting from
the Red Hat Enterprise Linux CD-ROM.
dd
this argument causes the installation program to prompt you to use a driver diskette.
dd=url
this argument causes the installation program to prompt you to use a driver image from a specified
HTTP, FTP, or NFS network address.
display=ip:0
this command allows remote display forwarding. In this command, ip should be replaced with the
IP address of the system on which you want the display to appear.
On the system you want the display to appear on, you must execute the command xhost
+remotehostname, where remotehostname is the name of the host from which you are
running the original display. Using the command xhost +remotehostname limits access to the
remote display terminal and does not allow access from anyone or any system not specifically
authorized for remote access.
driverdisk
this command performs the same function as the dd command and also prompts you to use a
driver diskette during the installation of Red Hat Enterprise Linux.
ide=nodma
this command disables DMA on all IDE devices and may be useful when having IDE-related
problems.
mediacheck
this command gives you the option of testing the integrity of the install source (if an ISO-based
method). this command works with the CD, DVD, hard drive ISO, and NFS ISO installation
methods. Verifying that the ISO images are intact before you attempt an installation helps to avoid
problems that are often encountered during an installation.
mem=xxxm
this command allows you to override the amount of memory the kernel detects for the machine.
This may be needed for some older systems where only 16 mb is detected and for some new
machines where the video card shares the video memory with the main memory. When executing
this command, xxx should be replaced with the amount of memory in megabytes.
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