Charles,
	For what it's worth, I think I've figured out what's wrong. The
size returned in /proc/mtd does not include the oob area. I verified
this by creating an mtd device the same size as the one I'm trying to
examine an image of, and then dumping it with nanddump. The resultant
image is larger than the size of the device. I can also copy this image
back in with nandwrite. However if I dump it with the -o option, to
exclude oob, the image dumped is exactly the size listed in /proc/mtd.

	Now I just have to find somewhere a precompiled copy of nanddump
for ARM. (I have a deep and abiding fear of cross-compilers.) I don't
suppose anyone on the list could direct me to such an animal?

		Thanks
			John

-----Original Message-----
From: Charles Manning [mailto:manningc2@actrix.gen.nz] 
Sent: Tuesday, December 01, 2009 3:26 PM
To: yaffs@lists.aleph1.co.uk
Cc: McCash John-GKJN37; Andrew Hoog
Subject: Re: [Yaffs] Access to files on a YAFFS2 image

What I suggest is that you first start off by running yaffs on the
nandsim 
then doing a dump from that and checking that looks like it should and
that 
you can then nandwrite that back.

Once you can make the process work with just one device it is then a lot

easier to see why things don't work when importing from somewhere else.

-- Charles


On Wednesday 02 December 2009 01:57:04 McCash John-GKJN37 wrote:
> Charles,
> 	OK, so we apparently do have the OOB data in these image dumps
> (obtained via the dump_image-arm tool included in nandroid), but when
we
> attempt to upload them to a nand emulator (under Ubuntu) with
'nandwrite
> -a -o', we're still getting the error:
>
> Input file is not page-aligned. Use the padding option.
> Data was only partially written due to error
>
> : Success
>
> 	Where do we go from here? Should this work, and if so, how do we
> determine exactly what the problem really is?
>
> 		Thanks much for your help
> 			John McCash
>
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