Thank you for the answer. Yes I can use speaker booting from DOS. But it is very convenient using DOSBox, because I can switch to XP to see the mails, surfing, etc. I am very satisfied with DOSBox because it supports serial port (and it is quite compatible with MS-DOS), it is used my program. PC …

I use DOSBox v0.72 under XP. I have a DOS program which uses the speaker. I can not configure DOSBox to have the sound on the speaker. The sound alwais go to the soundcard which is integrated in the motherboard. Under XP (and under MS DOS) in command mode the sound goes to the speaker. How can I …