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Re: [Bug-ddrescue] Suggestion to improve recovery rate during splitting
From: |
kwb78 |
Subject: |
Re: [Bug-ddrescue] Suggestion to improve recovery rate during splitting phase. |
Date: |
Wed, 23 Jan 2013 09:37:59 -0800 (PST) |
Antonio Diaz Diaz wrote:
>
> Oops! You are right. In version 1.14 ddrescue stopped marking as
> bad-sector the first sector of a failed multi-sector read because the
> kernel seems to return a total failure if some of the sectors are indeed
> bad.
>
> Now I have another interesting decision to make; should ddrescue try
> first the (possibly many) non-split areas adjacent to good areas, or the
> larger non-split areas flanked by bad sectors (if there is any)?
>
In the testing I have been doing, starting ddrescue at a location next to a
known good area and working away from the good area resulted in successful
recovery of data every single time. I think that makes these areas good
candidates for checking before areas surrounded by bad sectors, simply
because the odds are that the sector next to a good sector will also be
good.
--
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