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Set or change the default boot device as follows:
Set or Change
the Default
Boot Device
Step
Undo the
Clear the bootdef_dev environment variable by entering the
Setting
following command:
>>> set bootdef_dev ""
Setting or Changing the Default Boot Device (bootdef_dev)
Action
1
Determine the device or devices that you wish to
set as the default.
If a default boot device has not been set and you
do not know your system's boot device, see the
previous section Which One Is the Boot Device?
2
Set the environment variable by entering the
following command, substituting for device_name
the name (or names) of your boot devices:
set bootdef_dev device_name
For example:
If the boot
device is . . .
The SCSI drive,
DKA0
The DSSI drive,
DUB0
Multiple devices,
DUB0 and DKA0
3
Set another environment variable or reboot the
system.
Enter . . .
>>> set bootdef_dev DKA0
>>> set bootdef_dev DUB0
>>> set bootdef_dev DUB0,DKA0
Setting Environment Variables
4–9
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