[x_Master_x]

Apri CMD da amministratore. Scrivi:

diskpart

Dai invio, quindi:

automount enable

Conferma e riavvia

Informazioni sul comando:

automount [enable] [disable] [scrub] [noerr]
When enabled (the default), Windows automatically mounts the file system for a new basic volume when it is added to the system, and then assigns a drive letter to the volume. In system area network configurations, disabling automount prevents Windows from automatically mounting or assigning drive letters to any new basic volumes added to the system.

enable 

Enables Windows to automatically mount new basic volumes added to the system and to assign them drive letters.

disable 

Prevents Windows from automatically mounting any new basic volumes that are added to the system.