NAND erase

Andy Green andy at openmoko.com
Tue Jul 29 15:11:35 CEST 2008


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Somebody in the thread at some point said:
| When performing a 'nand erase rootfs' I get the following:
|
| ----------------------------
| GTA02v5 # nand erase rootfs
|
| NAND erase: device 0 offset 0x960000, size 0xf6a0000
| Skipping bad block at
| 0x0ff80000
| Skipping bad block at
| 0x0ffa0000
| Skipping bad block at
| 0x0ffc0000
| Skipping bad block at
| 0x0ffe0000
|
| OK
| ----------------------------
|
| These bad blocks don't seem to affect the device (so far) but are they
| anything to worry about?

It's fine.  Those blocks at the end contain the bad block table for the
device, they are marked themselves as bad blocks so they won't get
messed with by anything else.

Raw NAND is horrible stuff and you could easily find more real bad
blocks in that partition, bootloader and Linux know how to work around
it if it was so.

- -Andy
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