Installation guide

User Guide
35
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Before You Upgrade
Important Instructions
■ Microsoft
®
Windows Server
®
2003 requires Service Pack 1 or later.
■ Upgrading from Microsoft
®
Windows Server
®
2003 to Microsoft
®
Windows Server
®
2008 is not recommended.
■ Microsoft
®
Windows Server
®
2008 supports the following upgrade paths:
For Microsoft
®
Windows Server
®
2003 Standard x64 Edition:
- Microsoft
®
Windows Server
®
2008 Standard 64-bit (x64) Edition
- Microsoft
®
Windows Server
®
2008 Enterprise 64-bit (x64) Edition
For Microsoft
®
Windows Server
®
2003 Enterprise x64 Edition:
- Microsoft
®
Windows Server
®
2008 Enterprise 64-bit(x64)Edition
For Microsoft
®
Windows Server
®
2003 Standard Edition:
- Microsoft
®
Windows Server
®
2008 Standard 32-bit(x86)Edition
- Microsoft
®
Windows Server
®
2008 Enterprise 32-bit(x86)Edition
For Microsoft
®
Windows Server
®
2003 Enterprise Edition:
- Microsoft
®
Windows Server
®
2008 Enterprise 32-bit(x86)Edition
■ To use Microsoft
®
Windows Server
®
2008, you must first perform a backup of
necessary user information by following the instructions in “Installing Microsoft
®
Windows Server
®
2008” on page 17.
■ Upgrading between different architectures i.e. upgrading from Microsoft
®
Windows Server
®
2008 32-bit (x86) Edition to Microsoft
®
Windows Server
®
2008 64-bit (x64) Edition and vice versa is not supported.
■ Upgrading from a full installation of Microsoft
®
Windows Server
®
2008 to a
Server Core installation is not supported.
■ The system partition must have sufficient capacity available to install the system.
See “System Partition Size” on page 13.