Unsupported Upgrade Scenarios
Windows 9x, Windows Millennium, Windows XP, Windows Vista Editions, or Windows 7Windows NT Server 4.0Windows 2000 ServerWindows Server 2003 (RTM & SP1), Windows Server 2003 WebWindows Server 2003 for Itanium-based SystemsWindows Server 2008 R2 (M3 or Beta)Windows Server 2008/2008 R2 for Itanium-based SystemsCross-architecture in-place upgrades (x86 –> x64)Cross-language in-place upgradesCross-edition upgrades (Foundation –> Datacenter)Cross-build type in-place upgrades
Supported Upgrade Scenarios
From Server 2003 (SP2, R2) –> Server 2008 R2
Standard –> Standard, EnterpriseEnterprise –> Enterprise, DatacenterDatacenter –> Datacenter
From Server 2008 (SP1, SP2) –> Server 2008 R2
Web –> Web, StandardWeb Core –> Web Core, Standard CoreStandard –> Standard, EnterpriseStandard Core –> Standard Core, Enterprise CoreEnterprise –> Enterprise, DatacenterEnterprise Core –> Enterprise Core, Datacenter CoreDatacenter –> DatacenterDatacenter Core –> Datacenter Core
