hardware virtualization warning: hardware virtualization is not a feature of the cpu, or is not enabled in the bios

I'm trying to install esxi5 on my esxi5!
Deleted by Vee_Mod, no points refunded:  4/2/2012 5:34:25 AM
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CHI-LTDAsked:
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Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
Has this ever worked on this host?

e.g. nested with ESXi 4.1, Hyper-V, VMware Workstation?

not all CPUs work.

Check Virtualisation featuresbin Guest, change from Automatic
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TobiasCommented:
Dear,

You need to enable it on the BIOS.

Regards
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coolsport00Commented:
Does your host have VT enabled (CPU) in the BIOS? Are you installing an ESXi5 VM within an ESXi5 VM on VMware Workstation?

~coolsport00
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CHI-LTDAuthor Commented:
physical host or guest vm?
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CHI-LTDAuthor Commented:
i have enabled the vhv.allow = true on the guest.  set the guest to use esxi5.x on the OS.
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CHI-LTDAuthor Commented:
i managed to get a v5esxi guest running on my esxi4 host!!!
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CHI-LTDAuthor Commented:
must be an issue with v5.  reverted to nesting v4 on our v5 box
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