Mailinglist Archive: opensuse-factory (279 mails)

[Sid Boyce <sboyce@xxxxxxxxxxxxxxxx>]

Carlos E. R. wrote:
> On Tuesday, 2009-03-10 at 10:03 -0400, Greg Freemyer wrote:
>
> ...
>
> > If you're really curious, hdparm can create and recover bad blocks on
> > your media.  (I think it needs a IDE/SATA hdd to work).
>
> > see hdparm --make-bad-sector  and   --repair-sector
>
> Interesting...
>
> > When it creates them it uses a ATA diagnostic write to cause the per
> > sector crc to be bad, then on read you get a media error.
>
> > (ie on disk sectors are bigger than 512 bytes.  Part of the overhead
> > is a crc used to verify the media has not failed.)
>
> > Not sure how it does the fix side, but you are not supposed to
> > permanently loose the sector, thus it is more or less safe to test
> > with.
>
> > I would use a drive that does not have critical data.  And I assume
> > hdparm will be counting sectors from the beginning of the drive, not
> > the partition.
>
> I'm interested, but not so much as to try with a disk that is in actual
> use >:-)
>
> I'll save this for possible future reference.
>
> -- Cheers,
>        Carlos E. R.

The manpage says DANGEROUS, so this is something to try when I'm
absolutely sure I have everything on the new hard drive though I have
vital stuff backed up to 3 other boxes.
Regards
Sid.
-- 
Sid Boyce ... Hamradio License G3VBV, Licensed Private Pilot
Emeritus IBM/Amdahl Mainframes and Sun/Fujitsu Servers Tech Support
Specialist, Cricket Coach
Microsoft Windows Free Zone - Linux used for all Computing Tasks

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