There is nothing called lenovo DOS OS. DOS is the operating system which can be loaded in lenovo hardware..
dos operating system
MS-DOS stands for Microsoft Disk Operating System. MS-DOS was an operating system for personal computers that was used during the 1980s through the mid-1990s.
DOS stands for Disk Operating System. To be useful computers have to have an operating system. The early IBM PC computers used the MS-DOS operating system. A DOS command is an instruction to the DOS operating system. It must be in a specific form. For example, the command DIR told the DOS operating system to list all files. These commands were typed at a place called the DOS command line. There a many such commands.
MS-Dos is Microsoft Disk operating System. The operating system for early IBM based computers.
DOS = Disk Operating System
MS-DOS Command promt is the third operating system
NO
Yes..
DOS is just the operating system just like Windows XP. DOS SHELL is a program in DOS in which you can browse files and open them, etc. Just generally an easier way to move around the DOS operating system
MS-DOS is an operating system developed by Microsoft Corporation. Its called Microsoft Disk Operating System.
From 86-DOS
86-DOS