Lucent Technologies 585-210-940 manual Boot problems, Primary boot device is not available

Troubleshooting	CentreVu CMS Release 3 Version 8 Disk-Mirrored Systems
Boot problems	85

Boot problems

Trying to boot from the wrong device

Primary boot device is not available

Generally speaking, most boot problems are the result of one of two problems: either you are trying to boot from the wrong device or the primary boot device is not available. This section suggests remedies for those situations.

If you are trying to boot from the wrong device, you must change the boot device. Here is a quick way to do that:

1.Reboot: # /usr/sbin/shutdown -y -g0 -i0

2.From the ok prompt enter: ok> printenv boot-device

The system responds: boot-device<disk>

where <device> is either the word disk, indicating the primary boot device, or the word bootdevice2, indicating the alternate boot device. (This may be followed by additional device names.)

To change the boot device, enter the following command:

ok setenv boot-device bootdevice2

- or -

ok setenv boot-device disk

You should have set up bootdevice2 as the alternate boot device when you installed disk mirroring.

If the primary boot device is not available, you must change to the secondary boot device.

Changing to the secondary boot device is a matter of entering, from the ok prompt, the following command:

ok> setenv boot-device bootdevice2

You should have set up bootdevice2 as the alternate boot device when you installed mirroring.