Ok let me put it this way and maybe I am not sure what you are doing but if you got a message telling you to reboot. That mean to restart the computer. You do not need a disk to reboot.
Believe me you are not the first one to learn this. I learned it the same way. Now if this isn't what you need to know you will have to explain it in more details.
Believe me you are not the first one to learn this. I learned it the same way. Now if this isn't what you need to know you will have to explain it in more details.