

Before Windows 10 monthly patches were not cumulative. So, there were times when you would reinstall your OS and have to install hundreds of patches. It was a huge nightmare especially when some patches were dependent on others. For example, if you missed a servicing stack update, you would not get security patches. To help with this M$ would release “service packs” ever few years. These were a cumulative bundle of the security and stability patches, and sometime would have new features. For example, PowerShell was originally shipped as part of service packs. But basically they were a way to save you a few hours when doing reinstall.






Not to be that guy but…
shutdown /s /f /t 0