I have just gotten a Surface Pro 3 i5 256GB SSD 8GB RAM model. I would like to create a new partition to keep the Win 8 partition to 80GB and then use the remaining space for a second OS installation - I plan to put my workplace enterprise installation on it. That way, I can use the enterprise OS for work, and then use the consumer installation for personal stuff. Other option would be to put a second, personal profile on a single OS installation, though I'll be having kids playing games on it etc. so preference would be to completely separate work and personal accounts. I've gone into Disk Management via Control Panel and I see 4 partitions: 360MB Recovery partition; 200MB EFI partition; 5.08GB recovery partition; 232GB primary partition. Clicking on the C: primary partition, I go to Shrink Volume and would normally expect to be able to specify size, but only have the option to shrink 583MB. It includes a note "You cannot shrink a volume beyond the point where any unmovable files are located". I have defragged the harddrive (or rather whatever Optimise does in the Disk Clean-Up tool). Is there any way to get this setup working? And what would the consensus be - smart move to dual boot like this or no?