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How do I fix a bad sector on my hard drive?

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Summary: You should try to fix bad sectors on your hard drive before trashing it. Starting with "chkdsk" may help.

I recently tested my hard drive. The test revealed that I had a sector or partition that had failed and I was told I should look at replacing the hard drive because it may be catastrophic failure and crash. Should I replace the hard drive, can I repair my exsisting drive, if I do replace it can I then do some repairs and still use a portion of the drive?

Before you replace, I always like to try for a repair. Most hard disks actually have some spare sectors they set aside for exactly this purpose.

You could get lucky and be able to save a few bucks.

On Windows XP, I'd start with a "chkdsk/R". (/R: "Locates bad sectors and recovers readable information"). Fire up a Command Prompt to run that command. You can access Command Prompt by going to Start, Programs, Accessories, and then click on Command Prompt.

Under Windows 9x (95, 98 and Me), I believe scandisk has an option to do a surface scan and repair as well.

Another highly regarded option is a product called "SpinRite" available at Gibson Research which may also do the deed.

If those options both fail you, well, new hard disks aren't that expensive these days.

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Article C2239 - December 11, 2004

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Recent Comments
54 Comments

Many thanks to the posters who have flagged JFileRecovery for dealing with discs that have this error. It worked for me, allowing me to salvage several old mini-DVDs containing video that I had never been able to download via either the camcorder or my PC's DVD drive.

Posted by: Hombre7 at January 5, 2009 3:54 PM

I use "getdataback" it's a great HD data recover solution that works very well, unless your HD is completely damaged ie firmware or scratched.

Posted by: Chris at February 24, 2009 1:13 PM

Check www.r-cis.com to get free software for hdd data recovery

Posted by: Aied at March 7, 2009 4:43 AM

Hi,
I couldn't copy the Outlook.pst file because bad sectors on the hard disk and I copied the file successfully after I used "chkdsk /R".

Thank you very much for your help!

Posted by: Luis Tito at March 30, 2009 1:16 PM

pleas tel me how can i fix mycomputer
when i install yahoo sadnly mycomputer get badsector when i boot com/ system Root\system32\ntdll.dll

Posted by: Qaisuddin at May 24, 2009 5:22 AM

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