Ioannis Vranos said...
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|Does anyone know what does it mean? Has HD bad tracks?

When I see these, I reboot.  9 out of 10 times,
everything is fine after that.  If they happen
again, I try another drive.  That's usually the
end of it.  Every once in a blue moon it turns
out to be a power supply, cable or motherboard,
but those are rare (in my experience) for this
error.