Red Hat LINUX ES 2.1 -, Руководство по установке

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32 Chapter 3. Installing Red Hat Enterprise Linux ES
3.14.2. Alternative Boot Loaders
If you do not wish to use GRUB or LILO to boot your Red Hat Enterprise Linux ES system, you have
several alternatives:
Boot disk
You can use the boot disk created by the installation program (if you elected to create one).
LOADLIN
You can load Linux from MS-DOS. Unfortunately, it requires a copy of the Linux kernel (and
an initial RAM disk, if you have a SCSI adapter) to be available on an MS-DOS partition. The
only way to accomplish this is to boot your Red Hat Enterprise Linux ES system using some
other method (for example, from LILO on a diskette) and then copy the kernel to an MS-DOS
partition. LOADLIN is available from ftp://metalab.unc.edu/pub/Linux/system/boot/dualboot/
and associated mirror sites.
SYSLINUX
SYSLINUX is an MS-DOS program very similar to LOADLIN. It is also available from
ftp://metalab.unc.edu/pub/Linux/system/boot/loaders/ and associated mirror sites.
Some commercial boot loaders
You can load Linux using commercial boot loaders. For example, System Commander and Parti-
tion Magic are able to boot Linux (but still require GRUB or LILO to be installed in your Linux
root partition).
3.14.3. SMP Motherboards, GRUB, and LILO
This section is specific to SMP motherboards only. If the installation program detects an SMP moth-
erboard on your system, it will create two
/boot/grub/grub.conf
or
/etc/lilo.conf
entries
(depending on the boot loader you installed), rather than the usual single entry.
The two entries in
grub.conf
will be
Red Hat Enterprise Linux ES ( kernel version )
and
Red Hat Enterprise Linux ES ( kernel versions -smp)
. The
Red Hat Enterprise
Linux ES ( kernel version -smp)
will boot by default. However, if you have trouble with the
SMP kernel, you can elect to boot the
Red Hat Enterprise Linux ES ( kernel version )
en-
try instead. You will retain all the functionality as before, but you will only be operating with a single
processor.
The two entries in
lilo.conf
will be
linux
and
linux-up
. The
linux
entry will boot by default.
However, if you have trouble with the SMP kernel, you can elect to boot the
linux-up
entry instead.
You will retain all the functionality as before, but you will only be operating with a single processor.
3.15. GRUB Password
If you did not select GRUB as your boot loader, or did not install a boot loader, skip to Section 3.16.
GRUB passwords provide a security mechanism in an environment where physical access to your
server is available.