So...Firefox70 installs directly into my C drive automatically. Even the MSI installer of FF70 just dumps an icon on my desktop with no further info or direction. I click on the icon, lo and behold FF70 is installed. On my C drive. Right where I don't want it. WTF?! Is this for real, or is there a planet-wide gas leak?

Better yet, anybody out there know the real deal on how to install FF on a D drive, like normal people did, back when we lived on a normal planet?

- - - Updated - - -

Sorry if I came off as flippant or crude but this really has me stumped. Nobody else experiencing this?