For those of you looking to run Snow Leopard on Haswell CPUs, know that official kernel support and CPU support is not in the OS at all. As a matter of fact, the 2nd gen Sandy Bridge CPUs were only supported starting with 10.6.8. Users have had mixed results using the (now ancient) iBoot Legacy for a fresh install, as shown in the Simplest Mac OS X Installation Guide. So we made a new boot CD just for Haswell CPUs called iBoot Haswell. Use the default iBoot + MultiBeast guide, but simply substitute iBoot Haswell for the default iBoot. With this boot CD, I was able to achieve the following without access to a computer running OS X. 1. Install 10.6 Snow Leopard 2. Update to 10.6.8 Snow Leopard 3. Download Mountain Lion 10.8 from App Store 4. Create UniBeast USB to install Mountain Lion 10.8 All without doing any post-installation- just booting directly from iBoot Haswell. The ultimate goal being Mountain Lion. iBoot for Haswell 1.0.0 is now available in tonymacx86 Downloads. Credits: Legacy kernel - posted by stinga11 on osx86.net- created using the Legacy kernel source originally created by naw com, qoopz and kaitek. Leave your results here- we'll be working on this some more.