24H2到25H2明明就是改个版本号的事（质量更新/累积更新），但Windows Update还是像平台更新（功能更新）那样，帮我重装了一遍系统，并生成了30多个G的windows.old文件夹……
说好的
Microsoft has confirmed that version 25H2 ships on top of the same platform release that debuted with version 24H2 last year. That means version 25H2 will be delivered as a smaller enablement package or cumulative style update, and not a full-blown OS upgrade.
The good news is that this style of update for version 25H2 will mean an overall smaller download and install process, which should allow your PC to install the latest release at a much faster pace, almost like a normal monthly security update.
呢？