2011-03-07 05:34:11     "nand scrub" failure prolbem

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2011-03-07 05:34:11     "nand scrub" failure prolbem

derek cheng (TAIWAN)

Message: 98668   


Hello All,


We have a project, and it's just in mass production stage, but we encounter a "nand scrub" problem, and it's the message for one unit below.


Erasing at 0xb80000 --   9% complete.                                         

NAND 128MiB 3,3V 8-bit: MTD Erase failure: -5                                 

Erasing at 0x7fe0000 -- 100% complete. 


Is it normal? Can I and how to mark or escape this bad block area? I use "nand markbad 0xb80000" to mark the bad block, then run "nand scrub" again, but this failure message still exists.


Thanks in advance.




2011-03-07 05:40:35     Re: "nand scrub" failure prolbem

Mike Frysinger (UNITED STATES)

Message: 98669   


this is expected behavior with NAND.  you rarely get a device from the manuf with no bad blocks.