How do you want to install Red Hat Linux?
A full installation will destroy any previously saved information on the partitions you choose to install on.
An upgrade will preserve existing Red Hat Linux system data.
If you want to perform a full installation, you must choose the class of the installation. Your options are: Custom, GNOME Workstation, KDE Workstation, or Server.
If you don't know which installation class you want, please read the following very carefully.
Only the custom-class installation gives you complete flexibility. During a custom-class installation, it is up to you how disk space should be partitioned. You have complete control over the packages that will be installed on your system. You can also determine whether you'll use LILO to boot your system.
Workstation-class installations will install the X Window System and the desktop manager of your choice. A workstation-class installation removes any Linux-related partitions on all installed hard drives (and uses all free unpartitioned disk space). All non-Linux-related partitions will be left untouched.
If you want your system to function as a Linux-based server, and you don't want to heavily customize your system configuration, a server-class installation is most appropriate. A server-class installation removes ALL existing partitions on ALL installed hard drives, so choose this installation class only if you're sure you have nothing you want saved! This includes ALL partitions in use by other operating systems.
For more information concerning the differences among custom-, workstation-, and server-class installations, please refer to the Red Hat Linux Installation Guide.