I copied a 500Gb vhd file containing an SQL server. The virtual machine was shut down. I copied with windows explorer but it would give me an error message and abort the copy. Then I tried to copy the file with SyncToy. When synctoy completed the copy process both the source and the target files were 0MB. The source VHD file will not recover with undelete software. Any I deas on what I should do next. Thanks Tacticon