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ESX/ESXi/vSphere BIOS Release Date to version mapping (via: the birdhouse in my soul: Which ESX version am I running on ?)

Posted by jpluimers on 2012/10/01

It is possible from inside a guest VM to determine the kind of VMware host it runs on by looking at the BIOS information and for instance map the version of VMware Tools to install.

Still need to find out about the 04/15/11 BIOS Release Date, but this should give me a start (vSphere matches ESX/ESXi):

VMware version BIOS Release Date Address (hex) (bytes)
ESX 2.5 04/21/2004 0xE8480 97152
ESX 3.0 04/17/2006 0xE7C70 99216
ESX 3.5 01/30/2008 0xE7910 100080
ESX 4 08/15/2008 0xEA6C0 88384
ESX 4U1 09/22/2009 0xEA550 88752
ESX 4.1 10/13/2009 0xEA2E0 89376
ESX 5 01/07/2011 0xE72C0 101696
ESX 5.1 22/06/2012 0xEA0C0 89920

–jeroen

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