EasyRecovery DataRecovery is OnTrack's special software for recovering data from accidental deletion and software failures stemming from corrupted MFT tables (partitions storing data appearing as not formatted), virus infections and unbootable operating systems for example.
OnTrack's data recovery software used to be a top brand, but at the time of this writing in August 2009 the software doesn’t even support Windows Vista. Even if you have an OS older than Vista I recommend you look elsewhere for data recovery software because not only is the EasyRecovery DataRecovery software outdated but also documentation obsolete or incomplete.
You find some data recovery products mentioned in Bright Hub’s article How to Recover Data from a Crashed External Hard Drive if you like.
The lack of support for Windows Vista, and other shortcomings are the reasons for the low ratings you find below, e.g. one star for price to value. Who is going to buy an outdated product with such a price tag?