Question: what is ntvdm in windows?
Answer: NTVDM, or the NT Virtual DOS Machine, is a system component introduced in 1993 for all IA-32 editions of the Windows NT family (not included with 64-bit versions of the OS). ... The Windows NT 32-bit user-mode executable that is the basis for a single DOS (or Windows 3. x) environment is called ntvdm.exe.