Hyper-V
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/
A simple application to automate the preparation process for booting Hyper-V Server 2008 R2 off of USB drives.
by Yaniv Totshvili
1.SETUP
The processor should be a recent x86-64 one, like an AMD64 Athlon64, an AMD64 Opteron, or an Intel Core Duo processor. The motherboard and BIOS should be equipped with Hardware-assisted Virtualization and Hardware-enforced DEP.
2.SETUP
Boot CD
Select your language.
Disk2vhd is a utility that creates VHD (Virtual Hard Disk - Microsoft’s Virtual Machine disk format) versions of physical disks for use in Microsoft Virtual PC or Microsoft Hyper-V virtual machines (VMs). The difference between Disk2vhd and other physical-to-virtual tools is that you can run Disk2vhd on a system that’s online. Disk2vhd uses Windows’ Volume Snapshot capability, introduced in Windows XP, to create consistent point-in-time snapshots of the volumes you want to include in a conversion. You can even have Disk2vhd create the VHDs on local volumes,








