B3 with different RAM chips

[Tiago Marques]

Thanks, I'm aware of that. For this particular card it is either
defective or the XO is causing errors since it is barely 3 months old
and hasn't seen much use. It is gathering a good amount of errors by
writing 1-2GiB randomly, so I hope I don't need to go as far as
writing almost 1TiB before I find the problem.

Best regards,
Tiago

On Sun, Nov 29, 2009 at 3:47 AM, John Watlington <wad at laptop.org> wrote:
>
> Be aware that the test.sh script tends to be destructive to the device.
> If a device is close to failing (which is when you start seeing
> a larger number of errors), they will push it over the edge quickly.
>
> Some less reliable cards fail after as little as 900 GB written.
>
> Cheers,
> wad
>
> On Nov 28, 2009, at 1:31 AM, Richard A. Smith wrote:
>
>>
>>> Can you provide me with the software or scripts you use to do your
>>> internal SD card testing? I would love to put this card and the other
>>> more reliable SanDisk one I have to find out if it is a problem with
>>> the 1.5 card reader or the SD cards.
>>
>> It's the same scripts used for NAND testing.
>>
>> http://wiki.laptop.org/go/NAND_Testing
>>
>> Git repo:
>>
>> http://dev.laptop.org/git/users/wad/NANDtest/
>>
>> --
>> Richard A. Smith  <richard at laptop.org>
>> One Laptop per Child
>
>