Best diagnosis software to test hard drives

[wbt50]

What is the best software out there to test hard drives for errors etc ?

I want it to be as an ISO format to burn onto a disc if possible.

 

[Rip_Uk]

I just used SpinRite, seems ok.

 

[salvage-this]

SpinRite for sure. If you want free stuff look at MHDD and diagnostic tools from the manufacturer.

 

[claptonman]

I like GWscan. It's available on the Ultimate Boot CD.

 

[spirit]

There's a whole list of tools you can use here which was compiled by John. http://www.computerforum.com/211596-list-hard-drive-diagnostic-utilities-test-your-drive.html