DISCUTIL is a standalone utility that lets you perform various disk operations
without the operating system. It is particularly important when
you need to move files to tape from disks on a system that is logically inoperable,
such as one with directory damage. (Once you have done so, you then
use the RECOVER option of the VOLUTIL utility on this tape to move the files back onto
disk.)
You start the utility by entering DISCUTIL at the Initial System Load (ISL) prompt from the system console. (You may not
use DISCUTIL at another terminal.) Once DISCUTIL is loaded and running, the operating system is not available.
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