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Along with Windows 8, Windows Server 2012 gets a new, faster file copy — with a graphical view of file transfer speeds.
Hyper-V brings a new and more resilient virtual hard disk format, VHDX. You can use the Edit Virtual Hard Disk tools to upgrade to the new format — but remember to merge snapshots first.
If you're on the desktop and need quick access to key tools, just hit the Windows key and X, to open the new tools menu. You've got quick access to everything from command prompts to the File Explorer.