This repo contains resources that you can use to set up your raspberrypi.
Here you'll find the fat32 partition IMG file(s) that you need to boot up your raspberry. If you're placing your OS on a USB pen drive these minimal images are very fast to install.
# copy the boot image to the sdcard fat32 partition
dd if=2015-02-16-raspbian-wheezy-firmware.img of=/dev/disk8s1
# edit the raspberrypi boot instruction to point it to the USB drive
# partition
vim cmdline.txt
...
Oscar Brito
Copyright (c) 2015 Oscar Brito aetheon@gmail.com, contributors. Released under the license