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Though MS-DOS 7.0 and Windows 4.0 could be readily segregated and marketed as different products, Microsoft stopped marketing Windows and MS-DOS separately with the release of Windows 95. [15] A major difference from earlier versions of MS-DOS is the usage of the MSDOS.SYS file. [16] In MS-DOS 7, this is not a binary file, but a
Originally MS-DOS was designed to be an operating system that could run on any computer with a 8086-family microprocessor.It competed with other operating systems written for such computers, such as CP/M-86 and UCSD Pascal.
With Windows 95, 98, and Me, the role of MS-DOS was reduced to a boot loader according to Microsoft, with MS-DOS programs running in a virtual DOS machine within 32-bit Windows, with ability to boot directly into MS-DOS retained as a backward compatibility option for applications that required real mode access to the hardware, which was ...
MSDOS.SYS is a system file in MS-DOS and Windows 9x operating systems. In versions of MS-DOS from 1.1x through 6.22, the file comprises the MS-DOS kernel and is responsible for file access and program management. MSDOS.SYS is loaded by the DOS BIOS IO.SYS as part of the boot procedure. [1] In some OEM versions of MS-DOS, the file is named MSDOS ...
OS/2 allows for 'DOS from Drive A:', (VMDISK). This is a real DOS, like MS-DOS 6.22 or PC DOS 5.00. One makes a bootable floppy disk of the DOS, adds a number of drivers from OS/2, and then creates a special image. The DOS booted this way has full access to the system, but provides its own drivers for hardware.
DR-DOS 7.07, LBA/FAT32-enabled OEM version of DR-DOS; It may also refer to versions of the Microsoft MS-DOS family: MS-DOS 7.0, LBA-enabled DOS component bundled with Windows 95 in 1995; MS-DOS 7.1, LBA/FAT32-enabled DOS component bundled with Windows 98/98 SE in 1998/1999; It may also refer to versions of the IBM PC DOS family:
MDOS (Micropolis DOS) for S-100; MDOS, Myarc Disk Operating System for the Geneve 9640; MSX-DOS, a cross between MS-DOS 1.0 and CP/M developed by Microsoft for the MSX computer standard; NewDos/80, third-party option for the TRS-80; Oric DOS, for the Oric-1 home computer; PTDOS, [2] for the 1970s Sol-20 from Processor Technology
— In the "processing the BIOS parameter block" section the authors describe the evolution of the BIOS parameter block from the MS-DOS version 2.0 BPB to the PC DOS version 4.0 BPB, and label each field with the DOS version that introduced it. Townsend, Carl (1989). "4: Disk organization and management".