[Gta04-owner] QtMoko v41

Dr. H. Nikolaus Schaller hns at goldelico.com
Mon Mar 12 14:00:12 CET 2012


Am 12.03.2012 um 13:53 schrieb Christoph Mair:

> On Mon, Mar 12, 2012 at 1:44 PM, Dr. H. Nikolaus Schaller
> <hns at goldelico.com> wrote:
>> 
>> Am 12.03.2012 um 10:10 schrieb Dr. H. Nikolaus Schaller:
>> 
>>> Hi Radek,
>>> 
>>> Am 11.03.2012 um 21:56 schrieb Radek Polak:
>>> 
>>>> On Sunday 11 March 2012 17:37:48 Dr. H. Nikolaus Schaller wrote:
>>>> 
>>>>> I tried to test it but I get a kernel image CRC error (at least with the
>>>>> version in /boot/uImage in the .tgz).
>>>>> 
>>>>> Can you please cross-check?
>>>> 
>>>> Hmms - i tried and it booted ok for me. My uImage has this MD5 sum:
>>>> 
>>>> 49c5f30851fbbea47d8aed84e592567b
>>> 
>>> I think I can trace it down to a problem with the external card reader.
>>> 
>>> After unpacking the files I have the correct md5sum.
>>> 
>>> After unmounting and re-mounting the md5 changes. No idea why.
>>> 
>>> File size and modification date remains intact. I have synced twice
>>> and there is no fsck forced. It appears to be some additional buffer
>>> that is not flushed.
>>> 
>>> This may explain why some GTA04 users have problems creating
>>> bootable SD cards.
>>> 
>>> The setup I have:
>>> 
>>> Assus eeePC 4G (internal SD reader does not support SDHC)
>>> Debian Squeeze / LXDE
>>> external Kingston SDHC / SDXC reader
>> 
>> Ok, I think it turns out to be a very different problem: the partition table.
>> 
>> After creating the new partitions the kernel needs to update its
>> partition tables or it mixes sectors...
>> 
>> And on my eeePC I did not have installed the 'parted' package.
>> Therefore the call to /sbin/partprobe was ignored and unpacking
>> the files did mix up the disk.
>> 
>> NOTE WHEN CREATING A SD CARD:
>> 
>>        make sure that /sbin/partprobe is available on your host!
> 
> sfdisk -R should work too.

I will try. Would be simpler than requiring another dependency (parted).

The interesting thing is that the disk is partitioned by sfdisk and needs to
trigger a separate re-read. Doesn't sfdisk do that automatically after creating
new partitions?

Nikolaus



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