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CONFIG.SYS is the primary configuration file for the DOS and OS/2 operating systems.It is a special ASCII text file that contains user-accessible setup or configuration directives evaluated by the operating system's DOS BIOS (typically residing in IBMBIO.COM or IO.SYS) during boot.
AUTOEXEC.BAT: This is run by the default shell (usually COMMAND.COM) to execute commands at startup. CONFIG.SYS: This contains statements to configure DOS and load device drivers. Standard DOS utility programs: APPEND: Set a search path for data files. ASSIGN: Redirect requests for disk operations on one drive to a different drive.
AUTOEXEC.BAT is a system file that was originally on DOS-type operating systems.It is a plain-text batch file in the root directory of the boot device.The name of the file is an abbreviation of "automatic execution", which describes its function in automatically executing commands on system startup; the filename was coined in response to the 8.3 filename limitations of the FAT file system family.
During the boot phase, CONFIG.SYS and AUTOEXEC.BAT are executed, along with the configuration settings files WIN.INI and SYSTEM.INI. Virtual device drivers are also loaded in the startup process: they are most commonly loaded from the registry (HKLM\System\CurrentControlSet\Services\VxD) or from the SYSTEM.INI file. MS-DOS starts WIN.COM.
Microsoft bundles two specialized text/ASCII editors for core configuration files (such as PROTOCOL.INI, WIN.INI, SYSTEM.INI, CONFIG.SYS, and AUTOEXEC.BAT) with its operating systems. Sysedit is an MDI text editor that opens all these files simultaneously, available in all versions of Windows beginning with Windows 3.0 , except Me [ 1 ] and no ...
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Processes the CONFIG.SYS file, in MS-DOS 2.0 and higher and Windows 9x. Loads COMMAND.COM (or other operating system shell if specified). Displays the bootsplash in Windows 9x. If LOGO.SYS is present, it is used as the bootsplash. Otherwise, the bootsplash in IO.SYS is used.
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.