virtualbox.org

Hi Guys.

I am trying to load esxi5.1 as a virtual machine within virtual box , but failing at the particular stage. "Relocating modules and starting up the kernel"
i have enabled intel vt at the bios and set number of processors to 2 , memory 2+ GB on a 4GB lenovo T430 Lap.i am setting OS as linux and selecting other linux , also tried other linux 64 bit. is there any other option i ve to enable to fire up esxi as guest machine.

ESX will require VT-x and will not work in a VirtualBox VM.

When i googled , i see few guides on installing esxi on virtual box and they ve even shared screenshots.

ESXi requires VT-x, and that is not available inside a VM, and nested virtualization is not supported. So if it works, that's good, but it has never been the intention.
You are on your own from here, or you could try to contact the people who managed to make it work maybe? They would have answers for you.