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Root aggregate is missing after a Head Upgrade

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Visibility:: Public

Votes:: 0

Category:: ontap-9

Specialty:: hw

Last Updated:

Applies to

ONTAP 9
Head Upgrade (A300 to A400)

Issue

Root aggregate is missing after an Head Upgrade from A300 to A400.
From Console/SP:

No root volume found. Rebooting... . . disks appear to be assigned, but no aggr found

From maintenance mode:

*> aggr show the system appears to have no disks! unable to run aggr command [localhost:raid.assim.tree.noRootVol:error]: No usable root volume was found!