Ok in this video you will see how to Make directories, mount devices, copy files, extract tar.gz files and syncing the card.
Short Version would be:
sudo mkdir /tmp/root sudo mkdir /tmp/boot sudo mount /dev/sdb1 /tmp/boot sudo mount /dev/sdb2 /tmp/root sudo cp MLO /tmp/boot sudo cp u-boot.bin /tmp/boot sudo cp uImage /tmp/boot sudo cp boot.scr /tmp/boot sync sudo tar -xvz -C /tmp/root -f xMt1-image-beagleboard.tar.gz sync sudo umount /tmp/boot sudo umount /tmp/root Remove SD card and place in beagleboard xm and enjoy!
Ok here is the video:
[youtube=http://www.youtube.com/watch?v=Pgor1LMwGAg]