[Macchiato] SD problems

[Steve McIntyre]

On Thu, Jun 15, 2017 at 02:35:31AM +0200, Marcin Wojtas wrote:
>2017-06-15 1:50 GMT+02:00 Steve McIntyre <steve at einval.com>:
>>
>> On Wed, Jun 14, 2017 at 08:09:49PM +0200, Marcin Wojtas wrote:
>> >Hi Steve,
>> >
>> >I tried two different SD cards, both worked, so maybe I was lucky. Anyway, are
>> >you sure, you have MBR partition table + the first (boot) partition starts at
>> >4096?
>>
>> Ummm. Sure about 4096? I've been using dd to write images, offset by
>> just one 512-byte sector.
>
>Yes, I'm sure of that. From what I know, the bootrom recognizes
>partition table, and expect first one (with the image burnt) to be
>@4096. Anyway, I'm happy it's working now.

OK, fair enough. I was just following the instructions at

  https://wiki.solid-run.com/doku.php?id=products:a8040:software:development:u-boot_atf

and using

  dd if=flash-image.bin of=/dev/sdX bs=512 seek=1

If there's meant to be a partition table in sector 0 that points to a
partition at offset 4096, this is the first I've heard of it - thanks
for clarifying!

-- 
Steve McIntyre, Cambridge, UK.                                steve at einval.com
"I've only once written 'SQL is my bitch' in a comment. But that code 
 is in use on a military site..." -- Simon Booth