Reviving DOCs

Reviving DOCs

[Trevor Woolven]

Firstly, thanks to everyone for their help and advice.
Secondly, I appear to have found another way...

	nftl_format /dev/mtd0
	fdisk /dev/nftla	(sometimes a reboot is needed first)
	mke2fs /dev/nftla1	(I only create one partition on the DOC at present)

Now, so far this method appears to have revived three DOC2000 devices.
I've got a few more to try yet and so the chicken count hasn't started
but so far so good.

I haven't used docpmap to revive a DOC:

	docpmap /br /f:<filename>	to get an image of a 'virgin' DOC
	docpmap /bw /f:<filename>	to write virgin image onto 'broken' DOC

...because I haven't got any 'virgin' devices left (oops!) and I needed
to rebuild a kernel with MSDOS fs support (somewhere to store the image
files) and I couldn't be bothered.

DW's idea of using nanddump needs (I believe) a utility to write the
image back onto the DOC. I've hacked nanddump into nandput but have yet
to try it out. Is it worth it?????

Cheers

Trev.	(Much happier now)
-- 
Trevor Woolven - Director of Customer Applications Engineering
Zentropix Inc - a Lineo company

Tel: +44 (0)1273 234 647	 Fax: +44 (0)1273 704 482

Visit http://www.zentropix.com/ for Real Time Linux Tools
Visit http://www.realtimelinux.org/ for Real Time Linux Information


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RE: Reviving DOCs

[Oron Ogdan]

Trevor Woolven Worte :
> 
> 	docpmap /br /f:<filename>	to get an image of a 
> 'virgin' DOC
> 	docpmap /bw /f:<filename>	to write virgin image 
> onto 'broken' DOC
> 
> 
One problem with that plan is you assume all virgin flash devices are the
same.... Which they are not. each device has it's own bad block table so
this will "revive" the DiskOnChip with a bad block table which is not
correct. While this has little effect in R&D time (even bad blocks are 99.9%
working good), I would not go to manufacturing with it.

Oron

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