IBM 86884RX Installation Guide - Page 121

Linux boot process, Installation notes

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9. Desktop settings: you will be prompted to configure your desktop settings and choose which mode, text or graphical, you want to use the next time the machine is booted. 10.Hardware configuration: if you have some additional hardware, such as network interfaces, you can configure them here. Installation notes: If you install on a mirrored disk configuration while the mirror is being created, the SCSI driver detection on the installation program may take some time. The driver works fine, but it takes longer to load than in a non-mirrored configuration. You may also notice that the I/O throughput slows down. 4.3.5 Linux boot process The Linux boot process on IA-64 systems uses elilo instead of the classic lilo or grub boot loaders. elilo.conf is a file stored in the root director of the EFI System Partition. There is no longer a need for boot loaders because the EFI system can manage the boot procedure for the different operating systems. The boot loader is helpful, however, if we need to provide boot parameters to the kernel, for example if we want to recover from some special situations by putting parameters to the boot command line, or we want to boot on initlevel 3 only once and our system is configured to boot on initlevel 5 by default, etc. If you do not press any key before the delay estimated on the elilo.conf file, Linux will start loading automatically. To reduce the delay or remove it completely, change or remove the corresponding line in elilo.conf. Example 4-2 shows a typical elilo.conf configuration file. As you can see, the elilo configuration is very similar to the old lilo configuration. One of the main advantages of elilo is that you don't need to execute any command to make your changes active: elilo will automatically take any changes you may make on the elilo.conf file. Example 4-2 An example of elilo.conf, found in the EFI System Partition root directory timeout=10 read-only image=vmlinuz label=linux root=/dev/sda3 initrd=initdisk Chapter 4. Installation 107

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Chapter 4. Installation
107
9.
Desktop settings: you will be prompted to configure your desktop settings and
choose which mode, text or graphical, you want to use the next time the
machine is booted.
10.Hardware configuration: if you have some additional hardware, such as
network interfaces, you can configure them here.
4.3.5
Linux boot process
The Linux boot process on IA-64 systems uses elilo instead of the classic lilo or
grub boot loaders. elilo.conf is a file stored in the root director of the EFI System
Partition.
There is no longer a need for boot loaders because the EFI system can manage
the boot procedure for the different operating systems. The boot loader is helpful,
however, if we need to provide boot parameters to the kernel, for example if we
want to recover from some special situations by putting parameters to the boot
command line, or we want to boot on initlevel 3 only once and our system is
configured to boot on initlevel 5 by default, etc.
If you do not press any key before the delay estimated on the elilo.conf file, Linux
will start loading automatically. To reduce the delay or remove it completely,
change or remove the corresponding line in elilo.conf.
Example 4-2 shows a typical elilo.conf configuration file. As you can see, the elilo
configuration is very similar to the old lilo configuration. One of the main
advantages of elilo is that you don’t need to execute any command to make your
changes active: elilo will automatically take any changes you may make on the
elilo.conf file.
Example 4-2
An example of elilo.conf, found in the EFI System Partition root directory
timeout=10
read-only
image=vmlinuz
label=linux
root=/dev/sda3
initrd=initdisk
Installation notes
: If you install on a mirrored disk configuration while the
mirror is being created, the SCSI driver detection on the installation program
may take some time. The driver works fine, but it takes longer to load than in a
non-mirrored configuration. You may also notice that the I/O throughput slows
down.