Is it possible to change screen resolution without a desktop environment or a window manager

I looked up how I can use commands to resize the display, but all of them seem to require a window manager or a desktop environment, for example‌, xrandr, but it says No display found. I'm assuming that just means that I didn't install Xorg (but I could be wrong though.) I am using the Arch Linux installation ISO. Since I don't have a desktop environment or a window manager, it seems that I can't resize the display. Is it possible that even without a desktop environment or window manager, I can change the screen resolution, let's say from something like 1280x800 to 1366x720? If yes, how? Does the installation ISO already let me do that?