ESX 3.5 U4 - How can you tell if the install supports x64 without going into the BIOS?

[COS]

How can you tell if the installation you did supports an x64 bit VM without having to reboot into the BIOS? I'm pretty sure I did but I am getting the error "The host does not support 64 bit guests".

Thanks

[Penic_Albin]

HI,

Did you check this kb Hardware and firmware requirements for 64bit guest operating systems

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[depping]

esxcfg-info -w | grep "VT Support"

Duncan

VMware Communities User Moderator | VCP | VCDX

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[Penic_Albin]

Duncan what if is AMD processor?

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[RParker]

"The host does not support 64 bit guests".

This has come up before, and it was determined that there is NO way to do it. That grep for VT ONLY signifies if the CPU is capable, but not if its actually ENABLED. Therefore, you just have to make it a practice to ALWAYS turn this feature on your hosts, regardless if you need it or not, because you never know when you may need it like now.

VT doesn't affect 32-bit VM's in any way so there is no reason to NOT have it on.

You just have to bite the bullet, migrate via vmotion and reboot the host to determine if the feature is on.

[lreesey-old]

To determine if Intel VT or AMD-V are enabled in the BIOS:

1. Log in as root to the ESX Service Console.

2. Run the command:
   
   # esxcfg-info|grep HV
   
   The output indicates if can be interpreted as follows:
   
   0 - VT/AMD-V indicates that support is not available in this hardware.
   1 - VT/AMD-V indicates that VT and AMD-V might be available but they are not supported in this hardware.
   2 - VT/AMD-V indicates that VT and AMD-V are available but are currently not enabled.
   3 - VT/AMD-V indicates that VT and AMD-V are enabled in the BIOS and can be used.

This is from

good luck

-larryr

[RParker]

1. esxcfg-info|grep HV

Ah that's better, the other grep doesn't work...

|----HV Support............................................3

|----Option Name..................................CimIHVProvidersEnabled

|----Path........................................./Misc/CimIHVProvidersEnabled