arcboot-installer
The boot loader on SGI machines is arcboot.
It has to be installed on the same hard disk as the kernel (this is done
automatically by the installer). Arcboot supports different configurations
which are set up in /etc/arcboot.conf. Each
configuration has a unique name,
the default setup as created by the installer is linux
.
After arcboot has been installed, the system can be booted from hard disk
by setting some firmware environment variables entering
setenv SystemPartition scsi(scsi)disk(disk)rdisk(0)partition(0)
setenv OSLoadPartition scsi(scsi)disk(disk)rdisk(0)partition(partnr)
setenv OSLoader arcboot
setenv OSLoadFilename config
setenv AutoLoad yes
on the firmware prompt, and then typing boot.
scsi
is the SCSI bus to be booted from, this is 0
for the onboard controllers
disk
is the SCSI ID of the hard disk on which arcboot is
installed
partnr
is the number of the partition on which
/etc/arcboot.conf resides
config
is the name of the configuration entry in
/etc/arcboot.conf, which is linux
by
default.