IOS XR boot device

Unanswered Question
Mar 23rd, 2011


How can i change the boot device on IOS XR ???

RP/0/5/CPU0:-12406#sho ver | in Boot device
Boot device on node 0/1/CPU0 is mem:
Boot device on node 0/3/CPU0 is mem:
Boot device on node 0/4/CPU0 is disk0:
Boot device on node 0/5/CPU0 is disk0:


I have this problem too.
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Bryan Garland Tue, 03/29/2011 - 14:25


Hello, so you can't really change the boot device.  What is it you are really trying to accomplish?

What you are looking at there are PRPs in 4 and 5 and different linecards in the others, correct?  The RPs will boot off disk0.  While the linecards will memboot after the PRPs have come up.  This is normal. 

You can have a PRP do a memboot, but this is not supported for production routers.  The down side would be you can't later add packages or SMUs.  This is usually only done in a lab environment. 

As for different boot devices, you can have disk0: disk1: as devices on the PRPs. 

Take a look at the following doc for setting up disk mirroring and backups and such.




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