have to work on Windows, which I don't think has built-in support for that sort of thing
There are RAMDisks for Windows, even free ones. I use an old version of SoftPerfect RAM Disk (v3.4.7) that is freeware, no questions asked. It seens v4.x has become payware, but v3.4.x is still available on several sites.
Today I will gladly share my knowledge and experience, for there are no sweeter words than "I told you so". ;-)
I am surely not a specialist on the possibilities on Windows. My workstation runs on Windows, but our servers and databases and so on are all *nix and VMS (and even AS/400). But I am fairly sure there are some ramdisk possibilities on Windows. It even existed 30 years ago at the time of DOS.