[Arm-netbook] Booting from SD card with switch on so-dimm in other direction ...

[JLB]

Rather than having wires hanging out the side, why not melt a small hole 
in the laptop casing and shove a switch in there? :D

On Tue, 23 Mar 2010, Adam Gill wrote:

> Hi Jon, Luke .....
>
> So far I have been unsuccessful with Luke's method ....
>
> I will solder wires out each side of R46 ..which can then be shorted from 
> outside the netbook when re-assembled ....
>
> i believe you have  directly copied the entire NAND flash 2gb DIRECTLY onto 
> the 2gb SD card ....
>
> Could you upload exactly what you have put on the sd card? .... and how do i 
> format the sd card? is it a straight copy and paste?
>
> I will try both methods once i got the open of the shorted wires sorted out ?
>
> Much appreciated ----
>
> Adam
>
>
>
> Luke Kenneth Casson Leighton wrote:
>> On Tue, Mar 23, 2010 at 1:15 PM, Luke Kenneth Casson Leighton
>> <luke.leighton at googlemail.com> wrote:
>> 
>>> argh argh my tiny brain can't handle the maths on this one, working
>>> out from the "old" partition what is supposed to be done unless you
>>> have a 2gb SD card.
>>> 
>>> erm erm erm...
>>> 
>>
>>  ok these are the fdisk commands.
>>
>>  on any linux system, insert 2gb SD card, check where it got mounted
>> (/dev/sda, /dev/sdb or /dev/mmcblk0) do this:
>>
>>  fdisk /dev/{whatever}
>> 
>> then type these (return after each, blank line indicates press return as 
>> well)
>> 
>> d
>> 1
>> d
>> 2
>> d
>> 3
>> n
>> p
>> 3
>> 
>> +1400M
>> n
>> p
>> 2
>> 
>> +480M
>> n
>> p
>> 1
>> 
>> w
>> 
>> 
>> you must have _exactly_ a 2gb SD card for this to work.  this will
>> create three partitions, in _reverse_ order, the last will be in
>> exactly the right place and exactly the right size so that _this_
>> file, when uncompressed, can be shoved directly onto partition 1 (at
>> the end):
>> 
>> http://lkcl.net/arm_systems/CT-PC89E/mmcblk0p1.bz2
>> 
>> you will do that with:
>> 
>> $ bunzip2 mmcblk0p1
>> $ dd if=./mmcblk0p1 of=/dev/{partition 1 of sd card} bs=512
>>
>>  so if from above you are using /dev/sda then that's dd if=./mmcblk0p1
>> of=/dev/sda1 but if your SD card is mounted as /dev/mmcblk0 then it's
>> of=/dev/mmcblk0p1
>> 
>> l.
>>
>> 
>
>