You can clone your VirtualBox hard drive with the command line tool VBoxManage. You’ll find it installed in: C:\Program Files\Sun\xVM VirtualBox. Use the following steps to clone a hard drive:
- Use vboxmanage list hdds to find the correct UUID
- Use vboxmanage clonevdi UUID c:\clone.vdi to make a clone
- Or use vboxmanage clonehd -format VDI UUID c:\clone.vdi
If this doesn’t work you can also try to copy the VDI file, then use ‘vboxmanage internalcommands setvdiuuid filename.vdi’ to correct the UUID.