by FridayChild » Thu Mar 03, 2005 3:29 am
They are the same packages as those delivered "manually" via Windows Update. Automatic updates are just another way of delivering the same stuff without having the user to browse to the WU site.
It's convenient, but I wouldn't let it blindly install the patches, not even download them; it's enough to get notified of their availability. In this I agree with you.
That said, both Windows Update and Automatic updates scan your PC and determine what's needed and what's not. But this is done - as far as I know and unless I'm mistaken - on a "patch needed/patch not needed" basis, which means that the single patches are not repackaged depending on the specific system configuration.
If - say - MS releases a patch that replaces 10 original system files, the patch is completely downloaded if WU or AU detect that it's not already installed as a whole on a specific system. This means that the patch is downloaded in its entirety even if on the specific system some of the files it contains are already up to date. So it can be safely copied and installed on any other system that needs it without downloading it again.
Maybe that with AU the various patches are downloaded in a single package, and that's why size differs from system to system?
My system specifications: FLIGHT SIMULATOR 2004 - AMD Athlon 64 3200+ CPU - 3 GB PC-3200 DDR400 dual channel RAM - 500 GB Seagate B