Pre-deployment tasks
You should perform the following tasks before you install SP1. If you are installing using Windows Update, then you should perform these tasks before you accept the Microsoft Software License Terms.
Check disk space requirements. The following are the approximate disk space requirements for the system partition:
Installation option
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Approximate Requirement
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Stand-alone installation
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x86-based - 4.5 GB
x64-based - 7.5 GB
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Windows Update
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x86-based - 5 GB
x64-based - 8.5 GB
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Note
SP1 is only supported for x64-based and x86-based computers.
Back up important data. A system restore point is automatically taken before the installation of SP1 begins (for Windows Update and stand-alone installations), which backs up system files. However, you may want to back up any user data before you begin.
Read the release notes (http://go.microsoft.com/fwlink/?LinkID=52066).
Disconnect any serial cable connected to a UPS devices. If you have an uninterruptible power supply (UPS) connected to your destination computer, disconnect the connecting serial cable before running Setup. Setup automatically attempts to detect devices connected to serial ports, and UPS equipment can cause problems with the detection process. It is fine to leave your computer connected to a UPS for power.
Uninstall any previous versions of SP1. Microsoft does not support upgrading to this version from any previous version. For more information, see Uninstalling SP1.
Plug laptops into an AC power source.
Close all open programs. (including anti-virus programs)
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