Microsoft ScanDisk

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Microsoft ScanDisk
A component of Microsoft Windows
Microsoft Scandisk (Windows 98).png
Text-based version of Microsoft ScanDisk running on Windows 98
Other names ScanDisk
Type Utility software
Included with MS-DOS 6.2 and Windows 9x
Related components
External images
Graphical version of ScanDisk on Windows 98
ScanDisk prompt when it finds an error
ScanDisk Surface Scan Options dialog box
ScanDisk Advanced Options dialog box

Microsoft ScanDisk (also called ScanDisk), is a diagnostic utility included in MS-DOS and Windows 9x. It checks and repairs file systems errors on a disk drive. It was first introduced in MS-DOS 6.2 and succeeded its simpler predecessor, CHKDSK.

ScanDisk included a more user-friendly interface than CHKDSK, more configuration options,[1][2] and the ability to detect and (if possible) recover from physical errors on the disk. This replaced and improved upon the limited ability offered by the MS-DOS Recover utility.[3] Unlike CHKDSK, ScanDisk would also repair crosslinked files.[4]

In Windows 95 onwards, ScanDisk also had a graphical user interface, although the text-based user interface continued to be available for use in single-tasking ("DOS") mode.[5][6]

However, ScanDisk cannot check NTFS disk drives, and therefore it is unavailable for computers that may be running NT based (including Windows 2000, Windows XP, etc.) versions of Windows; for the purpose, a newer CHKDSK is provided instead.

On Unix-like systems, there are tools like fsck_msdosfs[7] and dosfsck to do the same task.

See also


  1. ^ "ScanDisk command-line options". Microsoft Support. Microsoft Corporation. 2007-01-23. Retrieved 24 December 2011.
  2. ^ "MS-DOS 6.2 ScanDisk.INI". Microsoft Support. Microsoft Corporation. 2003-10-14. Retrieved 24 December 2011.
  3. ^ "What Does RECOVER Do? (Revision 3.0)". Microsoft Support. Microsoft Corporation. 25 November 2003. Retrieved 24 December 2011.
  4. ^ "How to Fix Cross-linked Files (Revision: 2.0)". Microsoft Support. Microsoft Corporation. 10 May 2003. Retrieved 24 December 2011. If you are running MS-DOS 6.2 or later, run ScanDisk, instead of [~snip~]
  5. ^ "Windows 95 Documentation". Microsoft TechNet. Microsoft Corporation. 1996-03-03. Retrieved 24 December 2011.
  6. ^ "Description of ScanDisk for Windows (Scandskw.exe) in Windows 98/Me (Revision: 1.3)". Microsoft Support. Microsoft Corporation. 23 January 2007. Retrieved 24 December 2011.
  7. ^ "FSCK_MSDOSFS". FreeBSD System Manager's Manual. The FreeBSD Project. 13 August 1995. Retrieved 24 December 2011.

Further reading

  • Stinson, Craig (1998). "ch. 16: Optimizing, Maintaining, and Troubleshooting". Running Microsoft Windows 98. Redmond, Washington: Microsoft Press. ISBN 1-57231-681-0. Retrieved 24 December 2011.
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