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The chkdsk command on Windows XP. CHKDSK can be run from DOS prompt, Windows Explorer, Windows Command Prompt, Windows PowerShell or Recovery Console. [10] On Windows NT operating systems, CHKDSK can also check the disk surface for bad sectors and mark them (in MS-DOS 6.x and Windows 9x, this is a task done by Microsoft ScanDisk).
A utility to make a volume bootable. Sys rewrites the Volume Boot Code (the first sector of the partition that SYS is acting on) so that the code, when executed, will look for IO.SYS. SYS also copies the core DOS system files, IO.SYS, MSDOS.SYS, and COMMAND.COM, to the volume. SYS does not rewrite the Master Boot Record, contrary to widely held ...
Will refuse to run under certain conditions: When the volume is flagged dirty, that is marked for Windows to run CHKDSK at boot. The --force switch will override this; When Windows is hibernated on the partition
COMMAND.COM is the default command-line interpreter for MS-DOS, Windows 95, Windows 98 and Windows Me.In the case of DOS, it is the default user interface as well. [2] It has an additional role as the usual first program run after boot (init process), hence being responsible for setting up the system by running the AUTOEXEC.BAT configuration file, and being the ancestor of all processes.
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.
Microsoft ships this utility with Windows 98, Windows 2000 and all subsequent versions of the Windows NT family of operating systems. In Windows Vista, Windows 7 and Windows 10, System File Checker is integrated with Windows Resource Protection (WRP), which protects registry keys and folders as well as critical system files.
As boot time fsck is expected to run without user intervention, it generally defaults to not perform any destructive operations. This may be in the form of a read-only check (failing whenever issues are found), or more commonly, a "preen" -p mode that only fixes innocuous issues commonly found after an unclean shutdown (i.e. crash, power fail).
Shutdown options have been moved from a separate dialog box to the start menu, in Windows Vista and later versions of Microsoft Windows. The above is from Windows 7.. In Microsoft Windows and ReactOS, a PC or server is shut down by selecting the Shutdown item from the Start menu on the desktop.