A lot of recent virtualisation tools can either make use of, or demand, BIOS support (Intel-VT, AMD-V, etc). But in most of the BIOS screens I’ve seen, it has been disabled by default – sometimes even with fairly non-subtle (but vague) warnings. So: is there any issue I should be aware of in enabling VT? I assume it is only used when triggered deliberately by software such as VMware or Virtual PC. But what is [...]

I am trying to install a centos virtual host on my ubuntu laptop but I cannot enable the VT extensions in the BIOS. I have updated to the latest BIOS from Dell the processor is a core 2 duo so it definitely supports the VT extensions. Any ideas? Some vendors, like Sony, for my Vaio, disable Intel VT and do not provide a BIOS option to turn it on, even though the processor supports it [...]