juniper – recovering primary image [resilient dual-root partitions]

http://rtoodtoo.net/2012/06/28/recovering-primary-junos-image/

[resilient dual-root partitions]

--- JUNOS 11.4R1.6 built 2011-11-15 10:11:59 UTC

***********************************************************************
**                                                                   **
**  WARNING: THIS DEVICE HAS BOOTED FROM THE BACKUP JUNOS IMAGE      **
**                                                                   **
**  It is possible that the primary copy of JUNOS failed to boot up  **
**  properly, and so this device has booted from the backup copy.    **
**                                                                   **
**  Please re-install JUNOS to recover the primary copy in case      **
**  it has been corrupted.                                           **
**                                                                   **
***********************************************************************
show system storage partitions                                       
Boot Media: internal (da0)                                        
Active Partition: da0s2a                                          
Backup Partition: da0s1a                                          
Currently booted from: backup (da0s1a)

 

request system snapshot slice alternate
Copying '/dev/da0s1a' to '/dev/da0s2a' .. (this may take a few minutes)         
The following filesystems were archived: /

and reboot from primary partition again, if wanted or needed.

request system reboot slice alternate media internal

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