If "Reallocated sector count" of a HDD is Failed, whether it is safe to use the HDD, or we can ignore it.

I wouldn't use it, it's failing.

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HD Tune sometimes misinterprets SMART values, but I can't recall it ever getting the Reallocated Sector Count wrong.

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Thanks, Fzabkar for the reply. I also of the same opinion, that sometimes HDtune misrepresents.

Is there any other way to recheck it?

If with usb-ttl terminal F3T>m,0,0...,,,,2 executes the factory Reset command

will the HDD will come to ok state or not?

@longlife, you misunderstand me. Most SMART tools display the actual data correctly. It's just that some programmers interpret these data incorrectly.

I prefer to examine the data in hexadecimal format. Tools such as CrystalDiskInfo and HD Tune default to hexadecimal rather than decimal.

That said, Seagate's Reallocated Sector Count is correctly reported by HD Tune, in which case I wouldn't continue to use your drive. In fact you will probably find that the drive has more than 2500 reallocated sectors.

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