Disabling Finder browser windows

[El Capitano]

Hello,

Is there any way to completely disable the non-spatial Finder in OS X?

I mean those dratted metal file browser windows with forward/back controls, sidebar, tools and all of that. I have (I think) all the preferences set to stop them appearing in the regular course of things. But when I mount a new .dmg, or open certain CDs, back they come. (If I wanted extraneous clutter around my windows I'd have bought, well, Windows.)

I'm kind of a dab hand with command-option-T but would rather not have to!

cheers
CC

 

[WildCowboy]

You know you can also click the pill-shaped button in the upper-right corner, right?

Once you've made that selection for default Finder windows, it should respect your preference, but Finder can be buggy about such things.