Bare minimum creating a beagleboard SD card

mk_sd.sh

# Reformat disc
# Create master boot record
sudo parted --script /dev/sdb mklabel msdos
# Setup boot partition as FAT16
sudo fdisk /dev/sdb << END
n
p
1
1
+64M
t
e
p
w
END

sync

# Make disc bootable
sudo parted --script /dev/sdb set 1 boot on

# Calculate end of boot partition and end of disc
Eb=$(sudo parted -s /dev/sdb unit mb print free | grep primary | awk '{print $3}' | cut -d 'M' -f1)
Ed=$(sudo parted -s /dev/sdb unit mb print free | grep Free | tail -n 1 | awk '{print $3}' | cut -d 'M' -f1)

# Create rootfs partition
sudo parted --script /dev/sdb mkpart primary ext2 $Eb $Ed
sync

# Format boot partition
sudo mkfs.vfat -F 16 /dev/sdb1 -n root

# Format rootfs partition
sudo mkfs.ext2 /dev/sdb2 -L beagle

# Mount boot partition
sudo mount -t vfat /dev/sdb1 mnt

# Populate boot partition
sudo cp -v MLO mnt
sudo cp -v u-boot.bin mnt
sudo cp -v uImage mnt
sudo cp -v uInitrd mnt