Horizon DataSys has a standalone WinPE-based utility called "The Scavenger." It's tough to get a hold of, even through their SUPPORT. It has been proven to be fairly unreliable in the past at retrieving snapshot data, and I haven't seen a working version of it since the introduction of v10. The success of snapshot retrievals is inversely proportional to how long the screwed up System is run following a failure. Since the snapshot data blocks becomes fully allocatable following the successful BOOT of a un-protected Windows System, if the BOOTed System starts to re-use those blocks, the snapshot data disappears along with any structures that may have been able to get you to that data. The same happens if you successfully BOOT that System and schedule a ChkDsk... it will most likely destroy the snapshot data as well as any path information (FileStructure) that may lead you to that data. Once a Rollback protected System fails... the best thing to do is stop using it IMMEDIATELY and contact Horizon DataSys Support for further instructions... and don't necessarily hold your hopes up for snapshot DATA retrieval. That's the best chance you've got to get your hands on any old snapshot DATA.