I got a new Logitech media 600 usb keyboard and in the boot screen i can't choose between OS. (The keyboard is not functional and no light is on) is there any solution for that?
1) Use a USB-to-PS2 converter
2) See if your BIOS settings have anything about "legacy USB mode" or something similar and enable it
3) Use iReboot: Download iReboot 1.1.1 - NeoSmart Technologies