tablet with A10 doesn't boot from SDCard

[Sergio Costas]

Hi all:

I have a Szenio 2000
(http://www.bulltech.es/p/19/tablet-pc-szenio-2000), an A10-based
tablet, and tried to boot Linux from a SD card. Unfortunately it didn't
work. I also tried in other el-cheapo tablets based on A10 (clearly
clones of this same tablet) and had the same problem.

I created my own SD card, and also tried with a Fedora image downloaded
from http://scotland.proximity.on.ca/contrib-images/hansg/ but none of
them worked.

I also have a Szenio 1207, based on A13, and it works fine, it boots
from the SD card.

Does somebody know how to boot a Linux system from an external SD in
this tablet?

Thanks.

--
Nos leemos
RASTER (Linux user #228804)
ras...@rastersoft.com http://www.rastersoft.com

[Oliver Schinagl]

Sergio, if you've built your own u-boot-SPL from git, update your git
tree, as there was a regression causing unbootable SD cards as a result.

It is a known problem btw that certain SD cards simple do not work at all.

[Sergio Costas]

Ok. I'll try again.

Thanks!!!

El 01/09/13 00:36, Oliver Schinagl escribi�:

[Andrew]

Sergio Costas <rastersoft@...> writes:

>
> Ok. I'll try again.
>
> Thanks!!!
>

> El 01/09/13 00:36, Oliver Schinagl escribió:

> > Sergio, if you've built your own u-boot-SPL from git, update your git
> > tree, as there was a regression causing unbootable SD cards as a result.
> >
> > It is a known problem btw that certain SD cards simple do not work at
> > all.
> >
> > On 09/01/13 00:05, Sergio Costas wrote:
> >> Hi all:
> >>
> >> I have a Szenio 2000
> >> (http://www.bulltech.es/p/19/tablet-pc-szenio-2000), an A10-based
> >> tablet, and tried to boot Linux from a SD card. Unfortunately it didn't
> >> work. I also tried in other el-cheapo tablets based on A10 (clearly
> >> clones of this same tablet) and had the same problem.
> >>
> >> I created my own SD card, and also tried with a Fedora image downloaded
> >> from http://scotland.proximity.on.ca/contrib-images/hansg/ but none of
> >> them worked.
> >>
> >> I also have a Szenio 1207, based on A13, and it works fine, it boots
> >> from the SD card.
> >>
> >> Does somebody know how to boot a Linux system from an external SD in
> >> this tablet?
> >>
> >> Thanks.
> >>
> >
>

I too have had difficulties with the A10 boot process on SDCARD but after
looking carefully at some of the images that were installed by simple dd img
copy, I noticed the partitions are incorrect or there are more than 2 of
them. It seems that I had to go right back into gparted to resize the EXT4
partitions to fill the drive and reestablish FAT16/32 as the first
partition. Also have the correct script.bin and uEnv.txt in the FAT16/32
partition. The uEnv is important because it will define display parameters.
Some images like arch linux need a display parameter or the tablet will not
show display on the LCD and instead use HDMI or something.
The u-boot is put on the 32nd block and the spl on the 8th block.

Good luck.