[OLPC-AU] Mass imaging

[Tabitha Roder]

Hello Australia

Is there a reason they can't be plugged in for the whole nand-blast process?

You could setup three areas:
1. a staging area for charging, say table big enough for 20 at a time, get
that started then go get coffee
2. a build area same size as staging area (working out how long your image
takes may help you plan - you may find that you charge 40 laptops as can
build 2 lots of 20 in the time it takes to get sufficient battery charge)
3. a complete area (test one of each batch of ten loads correctly using this
area)

Have less people - the more people there are, the easier it is to get messed
up on where each laptop is up to. If you have more people then make it clear
what they are each responsible for so you don't go "umm... is this one
done?" about 769 times.
If you have space, then setup the three tables again on the other side of
the room so you can have two teams (or three areas, etc).

If you can, I would consider whether it is possible to give the batteries a
full charge before shipping. What effect does the battery state of charge
have on the first out of the box experience at the schools? Should they be
fully charged before dispatch or clearly marked for school staff to charge
before distribution to children?

We tried charging on 6 plug multiboxes in Samoa (using the same adaptor you
guys used with your XO-1.0s) and some of the adaptors got to 65 degrees
Celsius on the outside.

Oh, and for firmware updates they have to be plugged in, don't they?

my two cents
Tabitha



On 13 January 2011 19:30, James Cameron <quozl at laptop.org> wrote:

> On Thu, Jan 13, 2011 at 05:19:43PM +1100, Sridhar Dhanapalan wrote:
> > The challenge that we have is that there are 770 XOs in our warehouse
> > that require the same treatment. Since they've been sitting on the
> > shelves, they probably won't have sufficient battery power left for
> > NANDblasting.
>
> If the battery is not in the laptop, then the remaining capacity will
> depend on the storage temperature in the warehouse and the number of
> months.
>
> Pull ten units, check the battery capacity.  That will give you an idea
> of the size of the problem.  The percentage state of charge is *not*
> updated by the battery itself if it is stored outside the laptop.
>
> > What would be the best approach to deal with so many?
> >
> > I was thinking of this:
> >   1. have an army of people :)
> >   2. upgrade the firmware one-by-one
> >   3. start the NANDblaster sender
> >   4. once an XO starts to receive, place it in e-book mode and place
> > it in the XOP charging rack
>
> e-book mode isn't a good idea, since the heat release area on the back
> cover is obscured.
>
> I think you had better rack them for half an hour each, powered off,
> then bring them into the sequence for firmware upgrade and NANDblaster
> receive.  Half an hour's charging should provide enough run time for a
> NANDblasting.
>
> The next trouble you will face is telling the difference between a
> successful NANDblasting and a laptop that has run out of battery power.
>
> --
> James Cameron
> http://quozl.linux.org.au/
> _______________________________________________
> OLPC-AU mailing list
> OLPC-AU at lists.laptop.org
> http://lists.laptop.org/listinfo/olpc-au
>
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