Getting: /dev/sda read failed after 0 of 4096 at 0 input/output error during boot
Hello,
My hard disk suddenly became unreadable by my Windows 7, so I tried to backup some files from it yesterday using the bootable media from Acronis True Image 2014, and it went well.
But today I tried to boot again to backup other files, but during the booting, I got this error:
/dev/sda read failed after 0 of 4096 at 0 input/output error
What could be the problem ?
And how can I fix it?
Thanks.


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I agree with Steve.
Backup programs don't recover failed disks. They are designed to backup your data before something happens to it. If the hard disk is physically failing, or failed, trying to back it up now is most likely a futile effort. From the sound of things, your disk is dying, nearly dead, or possibly toast already.
You may want to download something like Seatools or WD Data LifeGuard to test the disk health - I believe both can be created as a bootable media to test a disk offline (although, its been awhile since I've used either and really dont remember).
At a minimum, you might be able to try running chkdsk /f /r from a Windows install disk against the OS partition, if it will let you (depending on the current health of the drive).
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