[smartmontools-support] smartctl fails but badblocks succeeds

[Alex]

Hi,

On Sun, Jun 26, 2022 at 2:33 AM Carlos E. R. <robin.listas at telefonica.net>
wrote:

> On 2022-06-12 23:29, Alex wrote:
> > Hi,
> > I have an older WD1502FAEX 1.5TB disk that fails a smartctl short and
> > long test at virtually the same place on the disk with a read error.
> > However, running badblocks over the same place on the disk where
> > smartctl fails has no problem, even after multiple read/write passes.
> >
> > Which test do I believe? Is this a reliable disk?
> >
> > If they're just read errors, isn't there some mechanism to relocate
> > those bad sectors or just mark them as unusable and move on?
>
> Writing to that sector causes the disk firmware to relocate it, if it is
> bad when writing.
>
> When in doubt, I backup the entire disk, then write it full of zeroes
> with dd. Then I run the smart long test, and decide.
>

Thanks for your help. I've already tried to run badblocks around the
specific areas that failed, and smartctl still fails after that.

I'll try to do it on the whole disk, but it would take many hours.

Thanks again
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