Chapter 2. The GRUB Boot Loader
When a computer with Red Hat Enterprise Linux is turned on, the
operating system is loaded into memory by a special program called
a boot loader. A boot loader usually
exists on the system's primary hard drive (or other media device)
and has the sole responsibility of loading the Linux kernel with
its required files or (in some cases) other operating systems into
memory.
Each architecture capable of running Red Hat Enterprise Linux
uses a different boot loader. The following table lists the boot
loaders available for each architecture:
| Architecture |
Boot Loaders |
| AMD® AMD64 |
GRUB |
| IBM® eServer™ iSeries™ |
OS/400® |
| IBM® eServer™ pSeries™ |
YABOOT |
| IBM® S/390® |
z/IPL |
| IBM® eServer™ zSeries® |
z/IPL |
| Intel® Itanium™ |
ELILO |
| x86 |
GRUB |
Table 2-1. Boot Loaders by Architecture
This chapter discusses commands and configuration options for
the GRUB boot loader included with Red Hat Enterprise Linux for the
x86 architecture.
