LinuxBSDos.com posted a triple-boot tutorial with Windows 7, Ubuntu 12.10 and Fedora 18 on a single hard disk drive

To Triple-boot Windows 7, Ubuntu 12.10 and Fedora 18 on a single hard disk drive (HDD) presents a different set of challenges than dual-booting any two of the set on same HDD. This article presents a step-by-step guide of one method of how to install such a system.

Note that with the cost of disk storage as low as it is now, it is recommended, when attempting to set up a multi-boot system, to do so using more than one HDD. Not only is it relatively easier to set up, but it solves that little problem of having a single-point of failure that a 1-HDD multi-boot system presents.

That single-point-of-failure issue is the sole case, and a very important one, against setting up a multi-boot system on one HDD. Aside from that, nothing prevents you from installing as many operating systems on one HDD that it can hold.

  Triple-boot Windows 7, Ubuntu 12.10 and Fedora 18 on one HDD