[Date Prev][Date Next] [Thread Prev][Thread Next] [Date Index] [Thread Index]

Re: recover data from a hd



On Mon, 26 Sep 2005, Henrique de Moraes Holschuh wrote:
> On Mon, 26 Sep 2005, Mike McCarty wrote:
> > drive itself "goes around" the bad spots, using sector remapping.
> 
> ONLY when you write to a bad sector, OR a SMART offline/online surface scan
> test hits the bad sector, whichever happens first.  Before that, many drives

Hmm, make it hits a sector that is going bad but can still be read after ECC
correction.  Come to think of it, Most drives will probably realocate the
sector during regular reads if it requires retries and too much ECC
correction.

Good drives will give you bad sector errors no matter what if
they cannot manage to recover the 100% correct information to remap the
sector somewhere else.

-- 
  "One disk to rule them all, One disk to find them. One disk to bring
  them all and in the darkness grind them. In the Land of Redmond
  where the shadows lie." -- The Silicon Valley Tarot
  Henrique Holschuh



Reply to: