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A disk operating system (DOS) is a computer operating system that resides on and can use a disk storage device, such as a floppy disk, hard disk drive, or optical disc.A disk operating system provides a file system for organizing, reading, and writing files on the storage disk, and a means for loading and running programs stored on that disk.
A cut-down version of RDOS, without real-time background and foreground capability but still capable of running multiple threads and multi-user Data General Business Basic, is called Data General Diskette Operating System [4] (DG-DOS or now—somewhat confusingly—simply DOS); another related operating system is RTOS, a Real-Time Operating ...
The previous menu option from DOS 1.0, N. DEFINE DEVICE, was replaced with N. CREATE MEM.SAV in DOS 2.0S. Version 2.0S was for single-density disks, 2.0D was for double-density disks. 2.0D shipped with the 815 Dual Disk Drive, which was both expensive and incompatible with the standard 810, and thus sold only a small number; making DOS version ...
Also TRUENAME does not search in the PATH. For example, in DOS 5, if the current directory is C:\TEMP, then TRUENAME command.com will display C:\TEMP\COMMAND.COM (which does not exist), not C:\DOS\COMMAND.COM (which does and is in the PATH). This command displays the UNC pathnames of mapped network or local CD drives. This command is an ...
Digital Research DR DOS 6.0 [16] and Datalight ROM-DOS [17] also include an implementation of the diskcopy command. The FreeDOS version was developed by Imre Leber and is licensed under the GNU GPL 2. [18] The command is not included in Windows 10. [19] [failed verification] The command is not included in Windows 11. xcopy is a like command
The first sector of DOS-formatted diskettes is the boot record. Two copies of the File Allocation Table occupy the two sectors which follow the boot record. Sectors four through seven hold the root directory. The remaining 313 sectors (160,256 bytes) store the data contents of files.
The original PC Tools package was first developed as a suite of utilities for DOS, released for retail in 1985 for $39.95. [1]With the introduction of version 4.0, the name was changed to PC Tools Deluxe, and the primary interface became a colorful graphical shell (previously the shell resembled PC BOSS and was monochrome.)
The command was included as a terminate-and-stay-resident program with MS-DOS and PC DOS versions 5 and later, [4] then Windows 9x, [5] and finally Windows 2000 [6] and later. In early 1989, functionality similar to DOSKEY was introduced with DR-DOS 3.40 with its HISTORY CONFIG.SYS directive. This enabled a user-configurable console input ...