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The boot screen and command-line interface of MS-DOS 6, with an example of its directory structure The boot screen and command-line interface of FreeDOS, showing version information and an example of its directory structure. DOS (/ d ɒ s /, / d ɔː s /) is a family of disk-based operating systems for IBM PC compatible computers. [1]
4DOS is most often used as a command-line replacement for the following operating systems: command-line: MS-DOS, IBM PC DOS, DR-DOS. graphical: Windows 95 to Windows 98, Windows 98SE. Since Windows NT and Windows 2000 includes both COMMAND.COM and cmd.exe, 4DOS and 4NT and derivatives can both be installed.
This is the first MS-DOS version Microsoft offered in a shrink wrap packaged product for smaller OEMs or system builders. [264] Apricot Computers pre-announces MS-DOS 4.0, the first multitasking version. Apricot will sell MS-DOS 4.0 to European customers as the controlling program for network servers that support a new family of Apricot ...
The version included with MS-DOS 4 and PC DOS 4 is no longer a simple command-line utility, but a full-fledged installer. The command is available in MS-DOS versions 3.3 and 4 and IBM PC DOS releases 3 through 4. [1] This command is no longer included in DOS Version 5 and later, where it has been replaced by SETUP.
Likewise, the IO.SYS of the older system is named IO.DOS for as long as Windows 9x is active. DR-DOS 7.06 (only this version) also follows this scheme and the IO.SYS filename in order to become bootable via MS-DOS boot sectors. Similarly, FreeDOS uses a combined system file as well, but names it KERNEL.SYS.
LOGO.SYS is the standard boot screen displayed upon startup. The file is located in the root directory of the boot drive. This is usually C:\, but with drive compression, like DriveSpace, this is the host drive (often H:\). The default LOGO.SYS file is stored in IO.SYS and is used by MS-DOS during startup if LOGO
OS/2 is a proprietary computer operating system for x86 and PowerPC based personal computers.It was created and initially developed jointly by IBM and Microsoft, under the leadership of IBM software designer Ed Iacobucci, [2] intended as a replacement for DOS.
MS-DOS 5.0 came in April 1991, and DR DOS 6.0 was released the following June. [90] These products are collectively referred to as "DOS", even though "Disk Operating System" is a generic term used on other systems unrelated to the x86 and IBM PC. "MS-DOS" can also be a generic reference to DOS on IBM PC compatible computers.