Linux has many tools that can mystify a new user. A whole new world of information and manipulation awaits you with hdparm.

Hdparm is a CLI utility that reveals all types of things about your hard drive. For example, hdparm -tT /dev/sda (replace sda with your appropriate device) performs a quick timed cache and buffer read test. This allows you to detemine if the drive has slowed which could indicate an impending problem with the drive.

The utility also can be used to provide oodles of information about the drive, from identifying the manufacturer and model to getting the parameters and much more.

With the capability to put a drive to sleep, change it's acoustic parameters and various other modes, I can see where it would have some data recovery applications too.

Caveat: Hdparm has some destructive capabilities that should be used only after due research and some practice on a non-critical drive.

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