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Windows 7 - How to Install Service Pack 1

Windows 7 Service Pack 1 is the first major update for Windows 7. Service packs include all of the important performance, security and reliability updates that were released previously. You can tell whether Service Pack 1 is installed by right-clicking on "Computer" in the start menu and going to properties. At the top of the page, you'll be presented with information about your edition of Windows. If you've got Service Pack 1 installed, it will be mentioned here.

1 – Using Windows Update to Install Service Pack 1
If you have left Windows Update at the default settings, it should have already installed the service pack automatically. This is the easiest way of installing the service pack, since it requires very little intervention. The whole pack takes around half an hour to install and you will be prompted to restart your computer once during the installation and again once it's complete. Windows will take longer to start up and shutdown in both instances as the installation of the updates will still be in progress.
If you use this method to acquire and install Service Pack 1, you'll need about 750 MB of free space on your hard drive if you're running the 32-bit edition of Windows 7 or 1050 MB if you're running a 64-bit edition.

2 – Manually Downloading and Installing Service Pack 1
If Windows Update, for some reason, fails to download and install Service Pack 1, or you need to install it on multiple computers, you can also download the update from the Microsoft Download Center.
Download the correct version for your operating system. There are versions for 32-bit and 64-bit systems. If you're not sure which one you're using, right click on "Computer" in the start menu and click on "Properties."
The service pack is a large file and it will take some time to download, depending on your connection. Once the download is complete, double-click on the file and follow the on-screen instructions to install it. Your computer will need to restart during the installation. Once the process is complete, you will receive a notification when you next log in telling you whether the operation was successful.
You can also install Service Pack 1 in the same manner from a DVD or other media.
Installing Service Pack 1 manually requires 4100 MB of free disk space or 7400 MB if you're running a 64-bit system. Once the service pack is installed, however, most of this space will be freed up.


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