Microsoft Longhorn
Windows Longhorn is a discontinued version of Windows Vista. Microsoft developed Longhorn between the years of 2002 and 2004. Windows Longhorn was in the middle of Windows XP and Windows Vista. It was mainly built of Windows XP. There were many different builds of Longhorn and only one had the Aero theme to it and that was build 4074. You can get many iso's for Longhorn and Windows Longhorn DOSE'NT run on Windows Vista hardware with a SATA connector. I have experienced this before because I have run a virtual machine to use longhorn on but I wouldn't work with Vista hardware but Windows XP does. If you do run it on Windows Vista compatibility, you'll get a BSOD, also known as the Blue Screen Of Death.