M Mr. Dubey 🎓 Coach ⭐ 102.92K Points 📊 MS Dos Q. Which file must be present to boot MS-DOS? (A) DOS.SYS (B) MSDOS.SYS (C) CONFIG.SYS (D) AUTOEXEC.BAT 👁️ Show Answer 💬 Discuss 🔗 Share ⚡Menu ✅ Correct Answer: (B) MSDOS.SYS Explanation: MSDOS.SYS is one of the core system files needed to boot MS-DOS.