disk wiping - "corrupt label wrong magic number"

As a disk wiping procedure we run "format-analyze-verify" on disks (in fact three times).

I've noticed that typically the f-a-v will pass through fine, but complete with an error

"Corrupt label; wrong magic number"

Is this anything in particular to be concerned about? Typically the disks get re-used in another system somewhere

cheers

ian

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