Re: Compact Flash Question

On Wed, May 7, 2008 at 9:54 AM, Tomasz Chmielewski <mangoo@xxxxxxxx> wrote:
How does it work, then?
How can it do wear levelling over the whole CF if some (or most) area of CF
is already used by our precious data/metadata?
It would have to know the areas where no data is stored, but it contradicts
the CF <-> filesystem separation.

The wear leveling algorithm even works if the CompactFlash controller
has no knowledge of the sectors on which filesystem data is stored.
All that is needed is some spare space on the CompactFlash that is not
made visible through the IDE interface, a controller that is able to
remap sectors and that stores this mapping persistently.

Bart.
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