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Maintaining Mirrored Systems CentreVu CMS Release 3 Version 8 Disk-Mirrored Systems
Using the alternate boot device 39
3
Maintaining Mirrored Systems3
This chapter contains procedures you are likely to need to
maintain a disk-mirrored system, including replacing disk
drives, recovering from disk failures, and using the olds scripts.
Using the alternate boot device 3
When you set up your mirrored system, you created an alternate boot
device named
bootdevice2.
The alternate boot device is a fail-safe device. If for some reason you are
unable to boot from the primary boot disk—a corrupted boot disk, for
example—you can tell the system to boot from the alternate device until
further notice.
You do that by entering one of the following commands, depending upon
whether you are at the boot prompt or in root:
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ok setenv boot-device bootdevice2
# eeprom boot-device=bootdevice2
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To reset the boot device to the primary disk, enter one of the following
commands, again depending upon whether you are at the boot prompt or
in root:
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ok setenv boot-device disk
# eeprom boot-device=disk
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