Operating System Finder

Determine the type of operating system in Windows XP

1. Click Start, click Run, type sysdm.cpl, and then click OK.
2. Click the General tab. The operating system appears as follows:
   • For a 64-bit operating system version: Microsoft Windows XP Professional x64 Edition Version < Year> appears under System.
   • For a 32-bit operating system version: Microsoft Windows XP Professional Version< Year> appears under System. 

 Determine the type of operating system in Windows Server 2003

Method 1

1. Click Start, click Run, type sysdm.cpl, and then click OK.
2. Click the General tab. The operating system appears as follows:
   • For a 64-bit operating system version: Microsoft Windows Server 2003 Enterprise x64 Edition appears under System.
   • For a 32-bit operating system version: Microsoft Windows Server 2003 Enterprise Edition appears under System.

Method 2

1. Click Start, click Run, type winmsd.exe, and then click OK.
2. In the details pane, locate Processor under Item. Note the value.
   • If the value that corresponds to Processor starts with x86, the computer is running a 32-bit version of the Windows operating system.
   • If the value that corresponds to Processor starts with EM64T or ia64, the computer is running a 64-bit version of the Windows operating system.