I have Microsoft Hyper-V running on my laptop (Windows 8). After the installation and configuration was a little bit of a pain (getting an Internet connection wasn't that easy for me) it works very well.
Unfortunately I did another major mistake. I wanted to use my VM for classes for testing iptables, and still use it afterwards. But instead of making a snapshot, I did what I was used to do on VirtualBox - copied the file. And once I deleted the destroyed VM and copied my file back, I couldn't start the machine any more. The error displayed was:
IDE/ATAPI Account does not have sufficient privilege to open attachment...
I've found quite fast an article on MSDN but the fix just didn't work for me. What worked was simply
- remove the Hard Disc which has the "broken" VHD loaded
- create a new Hard Disc
- load the VHD there inside.
Hyper-V will set all necessary permissions on it's own.