I found out a bit more from the product group. It seems some legacy operating systems, like Windows NT 4.0, bugcheck if they perform a CPUID and have more than three leafs returned. The checkbox is there to allow us to try and get them working. So I was on the right track after all. I still think this...

In my previous post I discussed how I went about trying to determine the differences in processor functionality provided by Hyper-V's Limit Processor Functionality (LPF) checkbox. You probably want to read through that in order to get the necessary background to understand this final instalment. In...

Recently I became rather intrigued with Hyper-V's Limit Processor Functionality (LPF) function. One little checkbox became such an obsession that I start wasting hours of my time trying to find out exactly what it does. The dialogue says, "Limit processor functionality to run an older operating system...