Installation guide

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 au-
thorized 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.
linux upgradeany
this command relaxes some of the checks on your /etc/redhat-release file. If your /
etc/redhat-release file has been changed from the default, your Red Hat Enterprise Linux
installation may not be found when attempting an upgrade to Red Hat Enterprise Linux 5.
Use this option only if your existing Red Hat Enterprise Linux installation was not detected.
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 in-
stallation methods. Verifying that the ISO images are intact before you attempt an installa-
tion 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 ma-
chine. 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.
nmi_watchdog=1
this command enables the built-in kernel deadlock detector. This command can be used to
debug hard kernel lockups. by executing periodic NMI (Non Maskable Interrupt) interrupts,
the kernel can monitor whether any CPU has locked up and print out debugging messages
as needed.
noapic
this x86 boot command tells the kernel not to use the APIC chip. It may be helpful for some
motherboards with a bad APIC (such as the Abit BP6) or with a buggy bios. systems based
on the nvidia nforce3 chipset (such as the Asus SK8N) have been known to hang during
IDE detection at boot time, or display other interrupt-delivery issues.
noht
this x86 boot command disables hyperthreading.
nofb
this command disables frame buffer support and allows the installation program to run in
text mode. This command may be necessary for accessibility with some screen reading
hardware.
nomce
this x86 boot command disables self-diagnosis checks performed on the CPU. the kernel
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