sudo kpartx -av 2014-12-24-wheezy-raspbian.img
sudo mkdir /mnt/loop0p2
sudo mount /dev/mapper/loop0p2 /mnt/loop0p2
#sudo gedit /mnt/loop0p2/etc/udev/rules.d/90-qemu.rules
sudo sed -ri "s/^.*libcofi_rpi.so/#\0/g" /mnt/loop0p2/etc/ld.so.preload
echo 'KERNEL=="sda", SYMLINK+="mmcblk0"
KERNEL=="sda?", SYMLINK+="mmcblk0p%n"
KERNEL=="sda2", SYMLINK+="root"' | sudo tee --append /mnt/loop0p2/etc/udev/rules.d/90-qemu.rules
sudo umount /mnt/loop0p2
sudo kpartx -d 2014-12-24-wheezy-raspbian.img