New AIX 5.3 "multibos" Command to Dual Boot from Same Disk
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This is conceptually similar to AIX's "alt-disk-install". However, in "alt-disk-install" the boot images must reside on separate disks and separate rootvg's. The "multibos" capability allows both OS images to reside on the same disk/rootvg, avoiding the need for a separate disk.
For more information see