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A Vista SP1 FAQ
Sunday, February 10th, 2008
I’ve been working with Windows Vista Service Pack 1 for several months now, in beta releases and, for the last two weeks, in the final released code. I’ve put together this post to answer some questions I’m frequently asked about this long-awaited update. If you have a question that isn’t in this list, ask in the Talkback section.
How big is SP1?
That depends on how you get it. The standalone updater for the five-language version weighs in at 434MB (455,562,200 bytes) for the x86 version, and 726MB (761,740,600 bytes) for the x64 version. If you download the installer via Windows Update, however, the package is much smaller, typically over 50 MB but well under 100 MB. The updater uses Remote Differential Compression to compare the currently installed OS files with the SP1 files on the server, downloads the changed portions from the Windows Update server, and then combines the updates with the unchanged contents on the computer being upgraded. A Vista SP1 FAQ | Ed Bott’s Microsoft Report | ZDNet.com
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