VMware: Easy upgrade ESXi 4.1 to ESXi 5.0
Last night I did an upgrade from vSphere ESXi 4.1 to ESXi 5.0 using the ESXi 5 installation CD. The upgrade process was very easy.. elapsed time: 10 minutes! Full Article Thank you http://blog.vmpros.nl/2011/07/13/vmware-easy-upgrade-esxi-4-1-to-esxi-5-0/