It monitors for I/O errors and timing irregularities, and it appears to do so based on a statistical model of the drive/system performance. Scannerz actually isn't actually hard drive testing software, it's fault detection software.
Spinrite is an ancient product developed for PC's back in the early '80s. The potential for corruption in such a case is high. In other words, if an intermittent cable failure corrupts data transfer between the CPU and hard drive, it could very well end up first reading corrupted data from a hard drive and then re-writing it over good data. This is OK if the source of the problems is actually a sector failure, but intermittent cable failures can cause the exact same problem. It attempts to read and then re-write a sector to a drive.
Spinrite uses what I consider, at least in its re-write mode, a very, very risky procedures. I can, however, speak of both Spinrite and Scannerz. I've never used Drive Genius so I don't know anything about it. I've seen this first hand, and it costs $100. I've read reports that all it was doing was a raw read of a hard drive and flagging I/O errors as sector problems whenever it felt like it. However, based on his experiences with a "famous tool" I would suspect it's initials are TTP.įrom what I can tell, that product doesn't seem to do a very thorough job of doing anything. companies can sue you for criticizing them. I have no idea where you live but in the U.S. "Please: if you can't name a product, can you describe its method of testing?"
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