Mon May 09, 2016 7:38 pm
For an HDMI (or DVi-D), the Pi *should* recognize the proper resolution on it's own when booted wh8le connected to a powered on display. If it doesn't do that, then you can force whatever resolution you want/will work in /boot/config.txt. Since that filesystem is the FAT32 partition, it can be modified on a Windows PC at need.