New
#510
I already answered this question. The initialization process verifies each file integrity already on the system using SHA1 hash values that are downloaded as XML-files compressed in CAB-files. Each CAB-file is one package with a lot of SHA1 values. A default Windows system has 50k+ files to be verified. The setup process first finds and verifies what you have, then it copies each and every file to the setup directory either by downloading it or from the local system, depending whether the file existed locally or not and if it could be verified for integrity. Then the setup verifies that copied/downloaded file again. Once all 50k+ files has been verified the actual setup preparation begins. After this it's time to reboot, and the setup does it's thing as usually.