Red Hat APPLICATION STACK 1.1 RELEASE Manuale Utente Scaricare il pdf (Pagina 25)

Changing Linux Kernels

A few seconds pass before the next prompt appears:

If you wish to perform further configuration of this machine, type

the command /bin/linuxconf at the command prompt.

The machine will now reboot to implement your configuration changes.

You are ﬁnished conﬁguring the SGI Linux operating system. Refer to the Red Hat

manuals that came with your system for further information.

Changing Linux Kernels

To change the kernel that you are running at boot time, you may specify the desired

kernel at the LILO prompt. During power-on or reset, the system pauses brieﬂy at this

prompt. A list of kernels can be obtained by typing a question mark at this prompt.

LILO> ?

linux linux-up linux-bigmem

On systems shipped form the factory (ones you have not modiﬁed), the ﬁrst entry is the

default. If you press Return, this kernel will be booted. If you install or upgrade using a

CD,thekernelmatchingyourmachineconﬁgurationisautomaticallychosen--soifyour

machine has more than 960Mb of RAM, linux-smp-bigmem is selected. UP or SMP is

selected based on whether you have one or more than one processors.

Ifyouwanttochangetoanotherkernel,simplyenterthenameofthekernelaslisted,and

press Return.

As the system comes from SGI, the following kernels are supplied:

• linux is the default kernel that supports SMP and up to 960MB of memory

(additional memory is ignored).

• linux-up is the single processor kernel that supports up to 960MB.

• linux-bigmem is the large memory kernel that supports SMP and up to 3.8GB of

memory.

To change your selection permanently, become superuser, and edit the /etc/lilo.conf ﬁle.

Each of these boot selections is listed in this ﬁle, and is arranged in a “paragraph”

fashion. There is optionally a “default” line that speciﬁes the default kernel. If this does

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Red Hat APPLICATION STACK 1.1 RELEASE Manuale Utente Pagina 25