Use this procedure to boot from a DVD, CD, or a net installation image. You need to mount the root (/) slice from the last active boot environment. Then run the luactivate command, which makes the switch. When you reboot, the last active boot environment is up and running again.
At the OK prompt, boot the machine to single-user state from the Solaris DVD, Solaris Installation CD, the network, or a local disk:
OK boot cdrom -s |
or
OK boot net -s |
or
OK boot device_name -s |
Specifies the name of the disk and the slice where a copy of the operating system resides, for example /dev/dsk/c0t0d0s0
If necessary, check the integrity of the file system for the fallback boot environment root (/).
# fsck device_name |
Specifies the location of the root (/) file system on the disk device of the boot environment you want to fall back to. The device name is entered in the form of /dev/dsk/cwtxdysz.
Mount the active boot environment root (/) slice to some directory, such as /mnt:
# mount device_name /mnt |
Specifies the location of the root (/) file system on the disk device of the boot environment you want to fall back to. The device name is entered in the form of /dev/dsk/cwtxdysz.
From the active boot environment root (/) slice, type:
# /mnt/sbin/luactivate |
luactivate activates the previous working boot environment and indicates the result.
Unmount /mnt
# umount /mnt |
Reboot.
# init 6 |
The previous working boot environment becomes the active boot environment.