save-nand problem

[Kim Quirk]

Hi Juliano,
I just went through this process myself last night.

The first time I did a save-nand it took many minutes. Unfortunately I had
to do it again since I missed a few things. The second time it took many
hours. It did complete (which surprised me).

The next step, which is new since 406, is that you also have to create a
.crc file.
Scroll to the bottom of this page:
http://wiki.laptop.org/go/Customizing_NAND_images

I had to get someone to build the crc for me since I didn't have a build
environment. I tried to upload the crcimg program that runs on a linux
machine, but I had some issues with the wiki upload. I had to give it an
extension. If you have access to a linux machine you may be able to create
your own crc file with this: http://wiki.laptop.org/go/Image:Crcimg.sh

Tell me if it works and we can add the link directly to wiki page. If
someone creates a version that can run on a mac or on windows it would be
great to upload them here so those of us without build environments could
create crc files for custom images
Regards,
Kim


On 9/7/07, Juliano Bittencourt <juliano at lec.ufrgs.br> wrote:
>
>
>
>     Hi folks,
>
>     I'm having problems using the save-nand OFW command to created a
> customized version of the OS. In the near past I used this command
> several times for this purpose, but now, it seems not working anymore.
>     There are several symptoms:
>
>      1. When I try to create the image file with the command 'save-nand
> disk:\nand.os', the laptop starts working but the entire process takes
> serveral hours to complete (about 5 hours)
>      2. Even when the process completes successfully, eventually the
> result is a 0 bites file;
>      3. When the process is completed and the resulting file has about
> 230mb, the problem is when I try to copy this file to a new laptop. The
> copy-nand command throws and error message : "Image file size is not a
> multiple of the NAND erase block size".
>
>      I repeated the process serveral times, on B2 and B3 machines with
> firmware q2c23. Am I missing something or is this actually a bug?
>
>      Best,
>
>      Juliano Bittencourt
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>
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