hi,

im running HP proliant ML150, installed 64-bit rhel6 and installed vmware workstation 8. since host os is 64-bit, i should be able to install 64-bit guest on it, but while istalling it shows 64-bit guest is not supported at os selection window, if i go any further clicking next, guest boots but i get an error msg saying host machine doesnt support 64-bit guest click yes or no to cancel installlation.

please help me why it was happening. if my host doesnt support 64-bit, it also shouldnt let me install 64-bit os on it as host os.

thank you.
subbu.

That's not at all true. Running a 64-bit guest OS in vmware (or virtualbox, kvm, etc.) requires your processor to support VT-x (on intel CPUs) or AMD-v (on AMD CPUs). Running a 64-bit directly on the hardware only requires a 64-bit CPU.

It sounds like your processor just doesn't support that virtualization bit.

It is possible that virtualisation is disabled in BIOS, so it's worth checking if it can be switched on in BIOS.

Ahh, yes, that's an excellent point, too. I forgot that sometimes that option is off by default.

For what it's worth, all new AMD CPUs support this virtualization bit. Intel, on the other hand, includes it as a price point in their higher end CPUs.

Adam

Bios choice may have an odd name.

But chipset may hold all this back as well.

hi all,

thanks for your replies, i checked the bios. though it's xeon processor there was no hardware virtualization option to enable im bios, it's because server is ML150 quiet old currently G7 series is running. But i wonder why there was no hardware virtualization option in bios, it's xeon processor. After all my old desktop with AMD ATHLON supports both 64bit and hardware virtualisation support.

thank you very much.

Just the way it is.