CHKDSK

CHKDSK or similar spellings such as chkdsk or chkdsk is the name of different command line programs for verification of file system structures on disk. Depending on the version and the underlying operating system FAT, HPFS or NTFS file systems can be checked on floppy disks, hard drives or other block devices such as flash memory for file system errors.

The program name is an abbreviation for the English command checkdisk, " check disk ". The program is the equivalent of the Unix program or command fsck ( short for File System Check). It can be under DOS, run as a stand-alone program from the command prompt with chkdsk OS / 2 and Microsoft Windows NT.

DOS

Under PC-compatible DOS versions like MS- DOS or PC DOS CHKDSK was for the review of FAT12 and FAT16 file systems, later also FAT32 systems. With MS- DOS 6.2 ScanDisk was included, which was more user friendly compared to CHKDSK, CHKDSK was still supplied to the setting of the Windows 9x line.

Windows NT

For Windows NT 3.1 was chkdsk re-implemented as a 32 -bit program that supported NTFS and HPFS file systems. The support for the testing of HPFS file systems accounted for the adjustment of the HPFS support from Microsoft.

Chkdsk can be started in the window of the Windows command prompt or before booting into the System Recovery Console.

Incorrect data blocks are detected. Their binary content is secured when possible. chkdsk is capable of a corrupted Master File Table (MFT ) to recognize an NTFS file system and repair.

Parameter

Application Examples

Protocol

CHKDSK creates a log from the Event Viewer Application log. In Windows XP, the source WINLOGON ie with EventID 1001. When Windows 7 is called the source Wininit with EventID 1001.

Operating systems that support the CHKDSK natively

  • 86- DOS
  • All PC-compatible DOS versions
  • All OS/2-Versionen
  • All Windows NT-based versions of Windows
86-DOS MS-DOS Microsoft ScanDisk Freeware
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