Which sections of the disk contain information from the manufacturer?

Question

Windows

Notebook Acer Swift 3. I want to reinstall windows. In order to roll a new Windows, it is recommended to remove the old one. To do this, you need to format unnecessary partitions. When deleting a partition, a message is displayed stating that there may be data or applications from the manufacturer. In what sections is this data located. That is, which sections cannot be deleted, please tell me?

Answer 1

windows (starting from version 8 or 7) requires two partitions - boot ~200mb and system, and oem add another recovery ~
500mb factory settings, they exist but are hidden in the wilds of official sites, so it seems that this was done on purpose so that users would carry the hardware to the service center and not do the simplest operations themselves.
Why do you need a recovery image? there is the correct version of the OS for which the license key is flashed in the BIOS of the laptop. It makes sense if you can’t find such a version yourself (you won’t be able to install the latest win10 if there is win 8 or for example you download 8.1 and there is the old 8)