Problem in booting ubuntu on beagleboard c3

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1

I am trying to install preinstalled Destop image of Ubuntu-12.04 on BeagleBoard C3 for my Project work as mentioned on the following site
https://wiki.ubuntu.com/ARM/OmapDesktopInstall#OMAP3.

I have formatted the SD card, It has two partions containing boot files and root filesystem respectively.
When I plugged the card in to given slot and switched power on and kept the user button pressed I am getting
the output show in the image file attached.

There are few lines which seems to be an error to me what do they mean? Lines are as follows

  1. Unrecognized expansion board: 0
  2. Wrong Image format for “source” command

What should I do to avoid these errors?

Thank you

Screenshot.png

2

Those instructions assume booting from the SD card. Your ancient board
is still booting from nand.

See for hints: http://elinux.org/BeagleBoardUbuntu#Upgrade_X-loader_and_U-boot

Good Luck!

Regards,