A: WSB is Windows' native solution for backing up files, folders, and entire Hyper-V VHD files. When WSB is configured on a Hyper-V host, VHDs can be backed up as single files. This enables single-file restoration of entire virtual machines, but makes restoring individual files and folders challenging.
To restore a single file or folder from a VHD that's been backed up using WSB, first restore the VHD to an available server. Once it's restored, launch Disk Management on that server and select Action, Attach VHD. Point the wizard that appears to the restored VHD and choose OK. Then, right-click the now-attached VHD and select Explore. An Explorer window will appear, allowing you to locate and restore the file or folder. Return to Disk Management and select Detach VHD when complete.
