I tried restoring a backup of my 3.5GB database with something like 13.5gb free space on my disk and to my surprise ended up running out of space during the restoration process. HM2 froze and I had to kill it. After freeing up some space to make my PC functional again and deleting the databases that I failed to restore I found myself with only 3GB of free space on my disk and no idea on how to get back the 10GB that are missing.
Two questions:
1) How can I tell how much disk space is needed for restoring a database?
2) How do I retrieve the 10GB that are missing now?