Just want to caution that the wiki document that Phoenix referenced is a bit incomplete / misleading, specifically with regards to self-signed certificates. There is actually an open bug/RFE (
46647) to have this document updated. I would recommend looking over the bug and searching the forums for further information. Overall though the steps described in the wiki document do work. I did a physical to virtual / 32-bit to 64-bit migration earlier this year using it as reference.