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I'm trying to import windows server 2008 r2 vhd files but during import wizard I got following error:



Apertura non riuscita del disco fisso C:\Program Files\Microsoft Learning\6421\Drives\6421B-NYC-DC1\Virtual Hard Disks\6421B-NYC-DC1.vhd.

Parent medium with UUID {6e256f71-8fcb-4c0a-b5ac-a2ae520214c3} of the medium 'C:\Program Files\Microsoft Learning\6421\Drives\6421B-NYC-DC1\Virtual Hard Disks\6421B-NYC-DC1.vhd' is not found in the media registry ('C:\Users\ NOME/.VirtualBox\VirtualBox.xml').

Codice 'uscita: E_FAIL (0x80004005)
Componente: Medium
Interfaccia: IMedium {53f9cc0c-e0fd-40a5-a404-a7a5272082cd}
Chiamante: IVirtualBox {c28be65f-1a8f-43b4-81f1-eb60cb516e66}

I have three files each one part of the same WS2008

-6421B-NYC-DC1.vhd
-6421B-NYC-DC1-Allfiles.vhd
-WS08R2-NYC-DC1.vhd

How to?
thanks