We already have BIOS supporting boot from removable storage device like USB drives and SD cards, however in order to take full advantage of this feature you must first create a bootable USB drive of operating of your choice. In the past we have covered manual methods of creating bootable Windows 7 USB drives, now here is a comparatively easy & automated way to create bootable Windows 7 USB.
Windows 7 SBB (Serial Bus Booting) is a freeware tool which allows you to select any removable device and make a Windows 7 booter. Although commonly used for USB, it can be used for SD cards as well, as long as your BIOS supports it! Quickly make a bootable Windows 7 USB device using this small utility.
The only disadvantage of Windows 7 SBB Tool is it doesn’t support ISO files. You will have to extract the files to their own independent folder.