bootadm(1M)															       bootadm(1M)

NAME

       bootadm - manage bootability of GRUB-enabled operating system

SYNOPSIS

       /sbin/bootadm update-archive [-vn] [-R altroot]

       /sbin/bootadm list-archive [-vn] [-R altroot]

	 only

       /sbin/bootadm set-menu [-R altroot] key=value

       /sbin/bootadm list-menu [-R altroot]

       The bootadm command manages the boot archive and GRUB (GRand Unified Bootloader) menu. The update-archive option provides a way for user to
       update the boot archive as a preventative measure or as part of the recovery procedure. The set-menu subcommand allows you  to  switch  the
       auto-boot timeout and default boot entry in the GRUB menu.

       The  list-menu  subcommand displays the location of the GRUB menu and the current GRUB menu entries. While the typical location of the GRUB
       menu is /boot/grub/menu.lst, depending on the install method used the active GRUB menu might be located somewhere else.	Use the  list-menu
       subcommand to locate the active GRUB menu. For example, if a system was installed using Live Upgrade, the GRUB menu might not be located in
       the current boot environment. See the  section for typical output from the list-menu option.

       Note that a SPARC system does not have the concept of a boot archive. The bootadm command on a SPARC system is intended for managing  disk-
       less clients.

SUBCOMMANDS

       The bootadm command has the following subcommands:

       update-archive

	   Updates current boot archive if required. Applies to both SPARC and	platforms.

       list-archive

	   Lists the files and directories to be included in the boot archive. Applies to both SPARC and  platforms.

       set-menu

	   Maintain  the  GRUB	menu. The current GRUB menu is boot/grub/menu.lst, relative to root. Do not depend on this location, because it is
	   subject to change. Applies to  platforms only.

       list-menu

	   Lists the location of the active GRUB menu, as well as the current GRUB menu entries. This includes the autoboot-timeout,  the  default
	   entry number, and the title of each entry. Applies to  platforms only.

       The bootadm command has the following options:

       -v

	   In an update-archive operation, stale files are displayed on stderr.

       -n

	   In an update-archive operation, archive content is checked but not updated.

       -R altroot

	   Operation is applied to an alternate root path.

	   Note -  The root file system of any non-global zones must not be referenced with the -R option. Doing so might damage the global zone's
		   file system, might compromise the security of the global zone,  and	might  damage  the  non-global	zone's	file  system.  See
		   zones(5).

       key=value

	   Possible values are:

	   default=entrynum

	       The item number (for example, 0, 1, or 2) in the GRUB menu designating the operating system to boot when the timer expires.

	   timeout=seconds

	       The number of seconds before the operating system designated by the default item number is booted. If the value is -1, auto boot is
	       disabled.

       Example 1: Updating the Current Boot Archive

       The following command updates the current boot archive:

       # bootadm update-archive

       Example 2: Updating the Boot Archive on an Alternate Root

       The following command updates the boot archive on an alternate root:

       # bootadm update-archive -R /a

       Example 3: Listing Installed OS Instances

       The following command lists the installed operating system instances in a GRUB menu:

       # bootadm list-menu

       default=0
       timeout=10(0) Solaris10(1) Solaris10 Failsafe(2) Linux

       Example 4: Switching Default Boot Entry

       The following command refers to the menu displayed in the previous example. The user selects Linux (item 2).

       # bootadm set-menu default=2

       Example 5: Listing GRUB Menu Entries and Location of GRUB Menu

       The following command lists the GRUB menu entries and the location of the GRUB menu:

       # bootadm list-menu
       The location for the active GRUB menu is: /stubboot/boot/grub/menu.lst
       default 0
       timeout 10
       0 Solaris10
       1 Solaris10 failsafe
       2 Linux

       Example 6: Displaying Location of GRUB Menu

       The following command displays the location of the GRUB menu:

       # bootadm list-menu
       The location for the active GRUB menu is: /dev/dsk/c0t1d0s0 (not mounted)
       The filesystem type of the menu device is <ufs>
       default 2
       timeout 10
       0 c0t1d0s3
       1 c0t1d0s3 failsafe
       2 Solaris10
       3 Solaris10 failsafe

       In this example, the active GRUB menu is located on a device which is not mounted. To access the GRUB menu, mount the device and access the
       GRUB menu at <mountpoint>/boot/grub/menu.lst.

       The following exit values are returned:

       0

	   The command completed successfully.

       1

	   The command exited due to an error.

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWcsu			   |
       +-----------------------------+-----------------------------+
       |Interface Stability	     |Stable			   |
       +-----------------------------+-----------------------------+

       boot(1M), installgrub(1M), attributes(5)

       The GRUB home page:

       http://www.gnu.org/software/grub/

								    10 Oct 2005 						       bootadm(1M)