Re: Sync option destroys flash!

Pavel Machek
2005-05-16T17:06:22Z

Hi!

> > All flashcards (other than dumb "smart media" cards) have integrated
> > NAND controllers which perform automatic page/block remapping and
> > which implement various wear-leveling algorithms. Rewriting "Sector 0"
> > 10000 times probably only writes once to the first sector of a 1GB card.
> > The other writes are spread around the rest of the card, and remapped
> > logically by the integrated controller.
>
> Assuming the firmware of the card is written with a modicum of clue,
> this is true. It's not clear how valid that assumption is, in the
> general case. There are reports of cards behaving as if they have almost
> no wear levelling at all.

I have seen card marked "3.3V/5V", but it only really worked on
3.3V. Linux used 5V and quickly killed it.
Pavel
--
Boycott Kodak -- for their patent abuse against Java.