Hi,
Windows SteadyState has been retried since it was incompatible with Windows 7 and later.
Kindly check details mentioned in below blog:
What Happened to Windows SteadyState?
https://learn.microsoft.com/zh-cn/archive/blogs/uspartner_ts2team/what-happened-to-windows-steadystate
https://en.wikipedia.org/wiki/Windows_SteadyState
Please note: Information posted in the given link is hosted by a third party. Microsoft does not guarantee the accuracy and effectiveness of information.
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Hope this helps and please help to accept as Answer if the response is useful.
Thanks,
Jenny