I haven’t used windows in a while but I thought it supported some form of cross-volume symlink? Or at least mounting an image stored on another volume to an arbitrary path.
So not-well-known that several tools that really should know better don't check for junctions with occasionally disastrous results in a fs walk. (Using junctions sounded really clever to me until this had me up all night figuring out why the backup system crashed.)
https://learn.microsoft.com/en-us/windows/win32/fileio/hard-...
https://learn.microsoft.com/en-us/windows-server/administrat...