Slow hard drive


Jan 2, 2012
Hey guys,

A little while ago I had a 2TB Western Digital Hard-drive, then one day all of a sudden my computer started running really slow. I tried everything to fix it (Update drivers, reformat) but it was still really slow. It eventually got to a point that my computer would no longer detect the hard drive, so I bought another one. This fixed the issue and my computer is now running at top speed.

The problem is I now need to add another hard drive to my computer and I was wondering if there is any way to fix the WD one that I was having issues with.

Anyone have an idea on how to bring back its speed?


If the drive cannot be detected, then there isn't much hope for it. Otherwise, if it does show up, then zero-fill it and hope that this will remap any bad sectors. Then try a comprehensive SMART diagnostic. Look for reallocated, pending, or uncorrectable sectors.

HD Sentinel (DOS / Windows / Linux):

HDDScan for Windows:

See this article for SMART info:
Yes, you should be able to. However, some utilities have difficulty communicating with certain USB-SATA bridges.

BTW, when you say that the external HDD will "show", are you sure that it is the HDD that is showing and not the USB-SATA bridge IC in the adapter? Does HD Sentinel report the model of the HDD?

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