bless

Set volume boot capability and startup disk options. More information: https://keith.github.io/xcode-man-pages/bless.8.html.

• 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

• Set a volume containing either Mac OS 9 and Mac OS X to be the active volume:

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

• Set the system to NetBoot and broadcast for an available server:

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

• 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