Linux Rescue Disk to backup broken windows machines

Hello i have created a ubuntu14.04 LTS USB drive with persistence and installed the urbackup client on it, this is nice i can now bootup a broken machine and take a backup of the windows files … however i am wondering if urbackup can do the entire drive? see the below example

Boot machine with USB (Ubuntu Desktop with urbackup client installed)
Open urbackup web interface set the backup dir and run the backup

This would be great for backing up broken systems, making images of systems, or systems that i do not want to install the client on. My question is

Is there a way to backup the entire windows drive so that it bootable?? from my USB? what would i set the path too would /dev/sda

right now i have it set to /media/ubuntu/Windows7_OS/ but i do not think this will make a bootable image for me!

I think for that you should have a look at http://clonezilla.org