OSDev.org

Hm, when I boot my kernel, it triple-faults. Why? I haven't set up a IDT yet, neither a exception handler. Do I have to do this? But why does the kernel triple-fault. Is there a General Protection Faul in my code?

any exception that occurs before IDT setting *will* reset the CPU...

And what is an exception, for example?
So something must be wrong in my code...what can that be?

- accessing a selector that is invalid
- push/p?p without a valid ss/esp pair
- some invalid info in the GDT (setting CS with a data segment, etc)
- running some invalid opcode (*very* common when you forget the "here: jmp here" at the end of your code and sweep the whole memory until you fall in the empty bios (0xffff) area)
- division by zero

...

Thanks!