Search (actually) everywhere / outside project / entire computer

Hi All,

(This likely applies to any JetBrains IDE)

I would like to be able to search my whole computer – or any selected folder outside just the project – for a file name, to open. (Ironically, the “Search Everywhere” feature and “All Places” scope only work to clutter search engine results). One way to allow this is to open a high/top level directory *as* the project, but then that removes many conveniences about project scoping. I am looking for either a configuration for the file search, or a way to have a custom Scope that's outside and inclusive of the project, or potentially a way to open two “projects” at the same time in the Explore/Project side panel, such that searches include both or you can switch with a click, but it would all share one tab row and everything.

I'm rather surprised I can't find a way to do this, and I appreciate any insight you might provide.

I'm looking in particular for RubyMine on Mac, but it's likely more broadly applicable, and I'd also be interested in C#/Rider and Windows solutions if they're different.

Many thanks!