nand oob corruption recovery

[Thomas Gleixner]

On Thursday 01 July 2004 19:24, David Updegraff wrote:
> I realize that specs say that if you wipe out mfg. bad block markers
> that there is "no way to recover them".. but...
> Are there suggestions for plausibly reliable test sequences that one
> could run a nand chip thru to regenerate valid bad block markers?
>
> Presumeably, it is insufficient to simply try to erase all blocks,
> marking failures as bad...  perhaps verified full page writes ?

Erasing may be not sufficient, as the block could be al ff. Writing all blocks 
to all zeros and verify that it works. Maybe try a 0x55 and 0xAA pattern too.

-- 
Thomas
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