How to Check Hard Drive for Bad Sectors and Errors in Linux


How to know if you have bad sectors on your hard drive in Ubuntu Desktop and how to fix them. You can use badblock program to fix this problem. The badblocks is program command line based allow to test your harddrive for, you guessed it, bad blocks.
To check your harddrive for bad blocks, open the terminal type following command:

badblocks -v /dev/sdax 

You can redirect result of this search to a file also.

badblocks -v /dev/sdax > bad-blocks-result

After executing the above command it will generate the file bad-blocks-result in the current directory . Now, you can pass this file to the fsck command to record these bad blocks.

fsck -t ext4 -l bad-blocks-result /dev/sdax

If badblocks reports a block that was already used, e2fsck will try to move the block to another place. If the block was really bad, not just marginal, the contents of the file may be corrupted.

About Alex Hunt

Hi All I am Manish Kumar Jha aka Alex Hunt. I am currently working in VMware Software India Pvt Ltd as Operations System Engineer (vCloud Air Operations). I have around 5 Years of IT experience and have exposure on VMware vSphere, vCloud Director, RHEL and modern data center technologies like Cisco UCS and Cisco Nexus 1000v and NSX. If you find any post informational to you please press like and share it across social media and leave your comments if you want to discuss further on any post. Disclaimer: All the information on this website is published in good faith and for general information purpose only. I don’t make any warranties about the completeness, reliability and accuracy of this information. Any action you take upon the information you find on this blog is strictly at your own risk. The Views and opinions published on this blog are my own and not the opinions of my employer or any of the vendors of the product discussed.
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