VXVM : Booting from an alternate boot disk

Below procedure explains you about ‘ booting from an alternate boot disk’

i)              ok printenv use-nvramrc?

If use-nvramrc? is set to true, this allows the use of alternate boot disks.

If use-nvramrc? is set to false, the system fails to boot from the devalias

and displays an error message such as the following:

Rebooting with command:

ok> boot vx-mirdisk

Boot device: /pci@1f,4000/scsi@3/disk@0,0 File and args:vxmirdisk

boot: cannot open vx-mirdisk

Enter filename [vx-mirdisk]:

ii)             ok setenv use-nvramrc? True


# eeprom use-nvramrc?=true

iii)            ok nvramrc=devalias vx-altboot_disk


# eeprom nvramrc=devalias vx-altboot_disk

iv)            ok devalias

Suitable mirror of the root disk are listed with names of the form VX-DISKNAME

v)            ok boot vx-altboot_disk



I have started unixadminschool.com ( aka gurkulindia.com) in 2009 as my own personal reference blog, and later sometime i have realized that my leanings might be helpful for other unixadmins if I manage my knowledge-base in more user friendly format. And the result is today's' unixadminschool.com. You can connect me at - https://www.linkedin.com/in/unixadminschool/

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