DEBUG.EXE is a 16-bit real-mode command-line debugger shipped with MS-DOS and early versions of Windows (95/98/ME, and 32-bit versions of NT, 2000, and XP). It allows you to:
To avoid typing the mount command every time: Download Debug Exe For Dosbox Windows
-E 109 "Hello, DOSBox!$" (Enter string data; $ is DOS string terminator) and 32-bit versions of NT
MS-DOS is considered “abandonware” by many retro communities. A safe and widely used source is the project or abandonware archives like VetusWare . For DEBUG specifically, you can extract it from a standard MS-DOS 6.22 disk image. DOSBox!$" (Enter string data
If you're having trouble finding or using debug.exe, there are alternative debugging tools available: