bless

Set volume bootability and startup disk options.

• FOLDER MODE: bless a volume with only Mac OS X or Darwin, and create the BootX and boot.efi files as needed:

bless --folder {{/Volumes/Mac OS X/System/Library/CoreServices}} --bootinfo --bootefi

• MOUNT MODE: set a volume containing either Mac OS 9 and Mac OS X to be the active volume:

bless --mount {{/Volumes/Mac OS}} --setBoot

• NETBOOT MODE: set the system to NetBoot and broadcast for an available server:

bless --netboot --server {{bsdp://255.255.255.255}}

• INFO MODE: gather information about the currently selected volume (as determined by the firmware), suitable for piping to a program capable of parsing Property Lists:

bless --info --plist