Starting DOS from USB drive

[Gunther]

There is a settting in the BIOS for legacy USB for the mouse and keyboard, enable it and they should both show up as PS/2 devices.

Yes, I know. It's enabled and the mouse pointer doesn't react.

Gunther

[Gunther]

Hallo japheth,

Btw, here's a sample how to switch to long-mode from DOS and back: http://www.japheth.de/JWasm/Dos64.html

Btw, the program prints out on my DOS: Hello 64bit and hangs. There's something wrong.

Gunther

[japheth]

Btw, the program prints out on my DOS: Hello 64bit and hangs. There's something wrong.

Are you sure it "hangs"? Because, it is supposed to wait in long mode for a key press. ESC will/should return to DOS, 'r' displays some register contents. Keyboard polling is done at the port level, so you'll have to have a standard keyboard - or a USB one in legacy mode - attached.

[Gunther]

Are you sure it "hangs"? Because, it is supposed to wait in long mode for a key press. ESC will/should return to DOS, 'r' displays some register contents. Keyboard polling is done at the port level, so you'll have to have a standard keyboard - or a USB one in legacy mode - attached.

It seems that this is the problem with my old Siemens notebook (BIOS to old). With the newer Toshiba notebook, the application does the job properly.

Gunther