How the System's Root Disk Is Determined (Solaris 8 Advanced Installation Guide)

Solaris 8 Advanced Installation Guide

How the System's Root Disk Is Determined

A system's root disk is the disk on the system that contains the root (/) file system. In a profile, you can use the rootdisk variable in place of a disk name, which JumpStart sets to the system's root disk. Table 18–6 describes how JumpStart determines the system's root disk for the installation.

Note –

This process only applies during an initial installation; you cannot change a system's root disk during an upgrade.

Table 18–6 How JumpStart Determines a System's Root Disk (Initial Installation)


Stage	Action
1	If the `root_device` keyword is specified in the profile, JumpStart sets `rootdisk` to the root device.
2	If `rootdisk` is not set and the `boot_device` keyword is specified in the profile, JumpStart sets `rootdisk` to the boot device.
3	If `rootdisk` is not set and a `filesys cwtxdyszsize /` entry is specified in the profile, JumpStart sets `rootdisk` to the disk specified in the entry.
4	If `rootdisk` is not set and a `rootdisk.sn` entry is specified in the profile, JumpStart searches the system's disks (in kernel probe order) for an existing root file system on the specified slice. If a disk is found, JumpStart sets `rootdisk` to the found disk.
5	If `rootdisk` is not set and `partitioning existing` is specified in the profile, JumpStart searches the system's disks (in kernel probe order) for an existing root file system. If a root file system is not found or more than one is found, an error occurs. If a root file system is found, JumpStart sets `rootdisk` to the found disk.
6	If `rootdisk` is not set, JumpStart sets `rootdisk` to the disk where the root (`/`) file system is installed.