HP xw3400 User Manual page 113

Q. Can I run the 32-bit versions of Red Hat Linux on a 64-bit capable systems such as the xw9300,
xw4300, xw8200, xw6200, and the xw4200?
A. Yes, you can. If you are doing the installation yourself, the installation process will inform you that
you are installing a 32-bit OS on a 64-bit machine and ask you if that is what you really want to do.
Just answer "Yes" and continue.
Q. How do I install the 64-bit version of Linux?
A. Just purchase the Red Hat Enterprise Linux 3 bits, either from HP or from some other source, and
go through the normal Red Hat Anaconda install. Once you complete the installation and are
rebooting for the first time, the FirstBoot utility will run and ask if you have Additional CDs to install.
Insert the HP Driver CD for RHEL 3 and answer "Yes.:
This process will install RHEL 3, any HP additions, and the accelerated graphics driver from the
appropriate graphics vendors. The xw9300, xw4300, xw8200, and xw6200 can be ordered with
the 64-bit OS already pre-installed.
Q. Once I have installed the 64-bit version of Linux, what do I have to do to build 64-bit apps?
A. It is simple. Just rebuild from scratch and the compiler will build 64-bit by default. This is true for
most apps. However, some apps must be made 64-bit clean, which means that the developers must
review the code to get rid of any assumptions about 32-bitness, such pointer arithmetic issues. Some
makefiles that explicitly declare paths such as /lib, /usr/lib and /usr/X11R6/lib might need to be
changed to append "64" such as /lib64, /usr/lib64 and /usr/X11R6/lib64.
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