Etherboot is a free software package for booting x86 PCs over a network. Etherboot is useful for booting PCs diskless.
You can download it from the following link: https://packetstormsecurity.com/files/download/13228/etherboot-4.1pre7.tar.bz2
Source: https://packetstormsecurity.com/files/13228/etherboot-4.1pre7.tar.bz2.html