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[ts-7000] Re: Creation of a 7800 bootable SD card

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Subject: [ts-7000] Re: Creation of a 7800 bootable SD card
From: "phrasky" <>
Date: Wed, 09 Jan 2008 20:33:21 -0000
Michael,

thanks, now it's clear! I created partition table ,assigned the 
types, put in kernel and init ram disk images and it boots fine. You 
really need to work on documentation.

Best regards,

Petr



--- In ts

 "Michael Schmidt" <> wrote:
>
> 
> On Wed, January 9, 2008 11:11 am, phrasky wrote:
> > Hi Michael,
> >
> > so the partitions 1,2,3 have to be 4MB at all times?
> 
> No, there isn't any reason why they can't be a different size.  
But of
> course they need to be large enough to hold the images you want to 
put on
> them.
> 
> (Note: partition 1 on the 7800 is different from partition 1 on 
earlier
> boards... it is a VFAT partition for ease of transfering files 
to/from
> windows e.g. using eclipse.  But on the 512MB SD cards this 
partition is
> only 4MB; only the 2GB SD cards it is much larger, and contains
> documentation and whatnot.
> 
> > Would it be possible to create own MBR and so for example have 
only
> > three patitions, with kernel, init ramdisk and rootfs, with any 
size
> > split?
> 
> There is something about the way everything got set up that I 
think would
> cause this to fail, but I don't remember off the top of my head 
what it
> is.  On older boards the bootrom would just look at partition 
types.  But
> for the 7800 you should have part1=don't care, part2=kernel (type 
0xda),
> part3=initrd (type 0xda), part4=rootfs.
> 
> >
> > Best regards,
> >
> > Petr
> 
> 
>  ______   Best Regards,
> |__  __/                  Michael Schmidt
>    ||                   Software Engineer
>    ||echnologic Systems (EmbeddedARM.com)
>    || (480)    16610 East Laser Drive #10
>    |/ 837-5200   Fountain Hills, AZ 85268
>        http://oz.embeddedarm.com/~michael
>




 
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