I had a spare 250GB drive a while ago from an old Windows Vista computer. There wasn't much data on the drive. I wanted to use it for a new OS in my computer, and I was in a rush to use it, so I backed up the partition with Redo Backup to a folder on my current NTFS drive. It didn't work right away, and I ended up having 3 folders worth of backup data, each about 30GB. When I tried to restore it in VMware or Virtualbox to a virtual disk, there were a lot of write errors. Is there a way to transfer these backup files to a virtual disk file?  Any way (Windows, Linux, Livecd, VM) is good, but I'm trying not to use free space, so a solution that doesn't require a lot of working space would be optimal.
How to use redobackup without free partition
partition;backup;virtual machine;ntfs