AFAIK there is no DOS in vista and windows 7, but I need to execute system program written on assembler to read and write data (BIOS).
I can't do thus from Vista, because I'm in user more (ring-3).
That's why I have 2 ideas:
– execute form DOS (but I need DOS);
– write service that executes before I log in to user mode.
Loading DOS from floppy isn't good idea since I don't have floppy.
Best Answer
Use FreeDOS, which claims to be 100% MS-DOS compatible and can be downloaded for free. It is bootable from CD or USB stick.