But since this is not enough, please suggest, what else? Somewhere in the depths, perhaps, lying now useless installation package (i.e. The first candidate for removal - lying on the mind the Windows folder.old (over 5 GB), then tips are not necessary.
The reasons for this are at least three: you need less space to store backups of the system partition, the process of its creation and deployment will be faster, and (personal reason) I need to accommodate the system partition on the SSD small size available in this laptop. The question arose, how can this volume be reduced. Everything went without problems, but was surprised by quite a large filling volume of the system partition - 40 GB. With one of the home laptops HP W7 license, I decided to succumb to the universal hype and upgrade it to W10.