Windows Server 2012 Disk Inaccessible
Problem: You are not able to access disk drives in windows server 2012 because UAC is enabled in windows 2012 server.
Solution: You need to turn off UAC via registry by changing DWORD “EnableLUA” value from 1 to 0 at this path “HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\policies\system”.
Note: A reboot is required to make these changes. After the reboot, UAC will be disabled and disk drive will be accessible.