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The cd command can be used to change the working directory of the working drive or another lettered drive. Typing the drive letter as a command on its own changes the working drive, e.g. C: ; alternatively, cd with the /d switch may be used to change the working drive and that drive's working directory in one step.
APPEND. Sets the path to be searched for data files or displays the current search path. The APPEND command is similar to the PATH command that tells DOS where to search for program files (files with a .COM, . EXE, or .BAT file name extension). The command is available in MS-DOS versions 3.2 and later.
If a user adds more than one drive to a system, the user has to cut a trace in the circuit board to permanently change the drive's device number, or hand-wire an external switch to allow it to be changed externally. [5] It is also possible to change the drive number via a software command, which is temporary and would be erased as soon as the ...
MS-DOS command prompt with drive letter C as part of the current working directory. In computer data storage, drive letter assignment is the process of assigning alphabetical identifiers to volumes. Unlike the concept of UNIX mount points, where volumes are named and located arbitrarily in a single hierarchical namespace, drive letter ...
The Windows Registry is a hierarchical database that stores low-level settings for the Microsoft Windows operating system and for applications that opt to use the registry. The kernel, device drivers, services, Security Accounts Manager, and user interfaces can all use the registry. The registry also allows access to counters for profiling ...
Defragmentation. In the maintenance of file systems, defragmentation is a process that reduces the degree of fragmentation. It does this by physically organizing the contents of the mass storage device used to store files into the smallest number of contiguous regions (fragments, extents). It also attempts to create larger regions of free space ...
Specifies the name of the CD-ROM hardware driver. CDDBUFFERS (PTS-DOS only) Specifies the number of buffers for CD-ROM access. CHAIN (DR DOS 5.0 and higher and Embedded DOS [nb 2] only) Continues CONFIG.SYS processing in new file and (since DR-DOS 7.02) at optional label. [8] [6] CLOCK (PTS-DOS only) Specifies the type of clock used by the system.
A block, a contiguous number of bytes, is the minimum unit of storage that is read from and written to a disk by a disk driver.The earliest disk drives had fixed block sizes (e.g. the IBM 350 disk storage unit (of the late 1950s) block size was 100 six-bit characters) but starting with the 1301 [8] IBM marketed subsystems that featured variable block sizes: a particular track could have blocks ...