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terryleung83
I have ordered my 3000 and i have several questions to ask
I have read some doc. about NAND restore, flash/update ...
but i am not very clear about it

1. NAND restore(procedure 2 of http://www.xlfag.com/zaurus/) will change all the content of NAND?

2. flash rom=NAND?

3. update/flash change content on the microdrive or the flash or both?(procedure 3 of the above site)

4. what does a "reset" (option 3 of the ok menu) actually do?
apink
If I could piggyback two questions here:

I know what a kernel is in linux. Is this the same as NAND? ROM?

What does NAND stand for?


Hope I'm not stepping on any toes.
Stubear
Some answers

1) Yes, doing a NAND restore replaces the entire flash chip with the contents of the NAND backup file. This includes the diagnostic menus (at least it did on the C760/C860 NAND), the kernel and the NAND flash partitions.

2) Nope, flash rom is a jffs2 (or possible other filesystem in the early zaurus) image that is written to the read-only portion of the flash chip - not sure of the C3000 partition layout, but I think it holds true. The NAND file is a snapshot (with error correction data) of the entire flash chip. It includes everything!

3) As I don't have a C3k I'm only guessing here, but from looking at the ROM image from sharp, it contains a jffs2 image that is written to the flash chip and a tarball that contains data for one of the partitions of the microdrive. I assume that anything with the same name will be overwritten, but other data that doesn't exist in the tarball would remain after flashing.

4) "reset" on the C760 and C1K deletes all data on the read-write partition of the flash chip and recopies the original data - I assume that the same is true for the C3K but that it also deletes data on the microdrive (note: again I can't say for sure as I don't have a C3K)

5) A kernel is not a NAND or a ROM, although the NAND backup contains a kernel and everything else on the flash chip. It is possible to flash a kernel without updating the ROM as well as update the ROM without updating the kernel.

6) NAND stands for NOT NAND, and is a type of logic gate. http://www.nist.gov/dads/HTML/nand.html. You can also get NOR flash chips too.

Stu
Teletubbie
Well a NAND restore is tricky with the c3000 afaik, because you will need a 4Gig Flash Card, since NAND is on HD.This is afaik the reason why the c3100 now comes with 128 flash. So be carefull by playing with alternative systems on the device.
I think the best site about the c3000 at moment is Meanies Website:
http://www.users.on.net/~hluc/myZaurus/
Cheers,
Sam
Stubear
QUOTE(Teletubbie @ Aug 11 2005, 06:28 AM)
Well a NAND restore is tricky with the c3000 afaik, because you will need a 4Gig Flash Card, since NAND is on HD.This is afaik the reason why the c3100 now comes with 128 flash. So be carefull by playing with alternative systems on the device.
I think the best site about the c3000 at moment is Meanies Website:
http://www.users.on.net/~hluc/myZaurus/
Cheers,
Sam
*


Sorry you are absolutely wrong about this. The NAND file is a backup of the flash chip! The flash chip on the C3000 is 16MB, therefore the NAND backup will be about 18MB (with extra error correction data I mentioned above).

Conics has the C3000 NAND (and a bunch of others also) and it is only 10MB zipped.

Stu
Teletubbie
QUOTE(Stubear @ Aug 11 2005, 03:46 PM)
Sorry you are absolutely wrong about this. Stu
*

np Stu, thank you for correcting my mistake!

Cheers,
Sam
terryleung83
thx all
now i have better concept about my Z
I have just finished the translation of the system smile.gif
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