I have a pump that does both. Finally got things to work with he schraeder adapter after trying the presta with my pump and only succeeding in letting all the air out of my tire. I could not get the presta to take air. Looks like it's going to be trial and error for me. I just want to get it figured out before I'm 20 miles from nowhere and need air in a tube.
The video did help. It confirmed what I just did after I did it. I think the schreader adapter is going to be the way to go for me.
Thanks everyone.
Bill