Maybe. If you have Linux the command `lsusb -v` gives you a verbose breakdown of the attached USB devices, if you find your keyboard it will show which interfaces it provides (a USB device can offer several if it wants) and to work at boot you want:
interface class 3 (a Human Interface Device) sub class 1 (Boot protocol or Boot interface)
In contrast the sub class 0 of HID is just the ordinary case, which is arbitrarily complicated (six thousand keys and four axis input? Why not) and so understandably a BIOS or similar environment might not implement that but a full blown OS usually does.
Doubtless tools exist for other platforms which can show the same information as lsusb
interface class 3 (a Human Interface Device) sub class 1 (Boot protocol or Boot interface)
In contrast the sub class 0 of HID is just the ordinary case, which is arbitrarily complicated (six thousand keys and four axis input? Why not) and so understandably a BIOS or similar environment might not implement that but a full blown OS usually does.
Doubtless tools exist for other platforms which can show the same information as lsusb