Before Starting for mentioning the hard disk space requirement, the computer’s first primary system partition must also have 30 MB of free hard disk space. The first primary system partition is the disk volume that contains the hardware-specific files that are required to start Windows. For example, the primary system partition contains the Ntldr file, the Boot.ini file, and the Ntdetect.com file.
If you are installing Windows XP SP3 on one computer, you can select from several installation methods. Each method has different space requirements, depending on the location from which you want to install the service pack.
1. To install Windows XP SP3 from a shared folder on the network to one computer, go the "Hard disk space required if you install Windows XP SP3 from a shared folder on the network" section.
2. To install Windows XP SP3from the Windows XP SP3 CD to one computer, go to the "Hard disk space required if you install Windows XP SP3 from the Windows XP SP3 CD" section.
3. To install Windows XP SP3from the Microsoft Download Center to one computer, go to the "Hard disk space required if you install Windows XP SP3 from the Microsoft Download Center" section.
4. To install Windows XP SP3 on more than one computer over a local network, use the Universal Naming Convention (UNC) mode of installation. The UNC mode lets you save space on the local computer by running the installation files from the local network. When you use the UNC mode to install Windows XP SP3, you can save the hard disk space that is normally required to extract Windows XP SP3 files on the local computer.
5. To install Windows XP SP3 from a local network to more than one computer using the UNC mode, go to the "To install Windows XP SP3 on more than one computer" section.
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