x86: How to Boot From an Alternate Operating System or Boot Environment

1. Assume the root role.

   See Using Your Assigned Administrative Rights in Securing Users and Processes in Oracle Solaris 11.2 .

2. Perform a standard reboot the system.

   # reboot -p

3. When the GRUB menu is displayed, navigate to the alternate boot environment or operating system that you want to boot.
4. To boot from the alternate operating system, press Control-X.

   If you have a system with UEFI firmware, and you are not using a serial console, pressing F10 also boots the alternate operating system.

Example 4-19  Booting From an Alternate Boot Environment by Using the reboot Command

You can boot an alternate boot entry by using the reboot command specifying the boot entry number, as shown in the following example:

# bootadm list-menu
the location of the boot loader configuration files is: /rpool/boot/grub
default 1
timeout 30
0 s11.s.backup
1 Oracle Solaris 11.s B14
# reboot 1
Apr 23 16:27:34 system-04 reboot: initiated by userx on /dev/consoleTerminated
system-04% syncing file systems... done
SunOS Release 5.11 Version 11.s 64-bit
Copyright (c) 1983, 2014, Oracle and/or its affiliates. All rights reserved.

Hostname: system-04

system-04 console login: