The terminal emulator isn't doing the right thing for you. Try CTRL (don't hold down) then 5 for F5. Better still get putty.
-----Original Message----- I'm running YaST to install the Suse distribution of Linux/390. I've gotten to the screen titled "Creating Filesystems". It lists several F-key choices at the bottom, but only F6=Format works. Everything else says that I'll lose changes if I exit now. I didn't want to exit; I wanted to set the mount point. I'd be satisfied if any of the buttons would work, actually. It won't let me continue because I have nothing defined as root, but I can't define anything as root because the keys don't work... Where do I go from here, other than to one of the support systems?