#man alt_disk_install alt_disk_install Command Purpose Installs an alternate disk with a mksysb install image or clones the currently running system to an alternate disk. This command is obsolete in AIX 5.3. Note: In AIX 5.3, the alt_disk_install command is replaced by the alt_disk_copy, alt_disk_mksysb, and alt_rootvg_op commands. The alt_disk_install module continues to be shipped as a wrapper..