VirtualBox (VERR_PDM_MEDIA_LOCKED)

Recently after installing updates on Ubuntu 12.04 , the "Full Screen" functionality of my VM VirtualBox did not work anymore. Every time I click on VirtualBox window - Devices - Install Guest Additions, gave me this error  - VERR_PDM_MEDIA_LOCKED, which implies that your local drive allocated for your VM is locked out for any changes.... Continue Reading →

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