MPE/iX System Utilities Reference Manual (32650-90882)

6 DISCUTIL

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.

Operation

You may invoke DISCUTIL only from the ISL> prompt. To display the ISL> prompt and

start the utility, perform these steps:

1. Initiate a soft reset of the system by entering

CTRL B.

2. At the CM> prompt, enter the following command to start the autoboot process:

ENTER

3. When you see the message TO OVERRIDE, PRESS ANY KEY WITHIN 10 SECONDS,

press

RTN immediately.

4. When you see the message Interact with IPL (Y or N)?, enter Y. The system

displays the ISL> prompt.

5. To start DISCUTIL, enter:

ISL> DISCUTIL

The DISCUTIL banner will appear followed by the discutil> prompt.

NOTE

To see other utilities available

before

the system is started enter LS at the

ISL> prompt.