freezing of the iMac. hard drive failure?

My iMac has been freezing a few days ago. At first I thought it might be a Trojan horse, but I could not detect any. I update my OS to El Capitan, hoping he could solve the problem, but the problem persisted.

I checked the console and I saw this message continues to flow upward

kernel [0]: disk0s2: i/o error.

I heard that this indicates a drive failure. I ran first aid through disk utility, then a test of material using the Apple disc, but nothing was detected.

I hope that it is would be a software issue and not a disk failure. Someone has an idea how to be course and finally fix it?

My specs:

iMac (21.5 inch, mid 2011)

2.8 GHz Intel Core i7 processor

12 GB DDR3 memory at 1333 MHz

AMD Radeon HD 6770 M 512 MB graphics card

Storage: 164,48 GB free of 829 GB

I should mention that I run windows via bootcamp on the same drive. I haven't experienced the issue on windows, so is it possible that it is not a hardware problem?

Tags: Mac

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