Red Hat ENTERPRISE LINUX 5 - VIRTUAL SERVER ADMINISTRATION, Руководство по установке

Страница: 243 / 388

Chapter 20.
225
Additional Boot Options
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.
You can also store kernel boot options for the z/IPL boot loader in the
zipl.conf
file, either by
editing the file manually or using the
zipl
tool.
Kernel parameters in
zipl.conf
that contain quotation marks
Where kernel parameters use nested quotation marks, the required order in Red Hat
Enterprise Linux is double quote marks for the outer set and single quote marks for
the inner set. For example,
parameters="vmhalt='LOGOFF'"
is correct, while
parameters='vmhalt="LOGOFF"'
is not correct and may lead to unexpected
behavior.
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= 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.
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.
mpath
enables multipath support.
Important — mandatory for installation on multipath devices
If you install Red Hat Enterprise Linux 5.5 on a network storage device accessible
through multiple paths, you must boot the installation process with this option. If you