About: http://webisa.webdatacommons.org/438649324

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	Windows 7 allows you to boot from a VHD. That would allow you to backup the disk as a single file, allow you to snapshot it and you could boot form a previous version if there was a problem.
http://www.w3.org/ns/prov#wasQuotedFrom	superuser.com