- Chkdsk is a device that scans and checks the hard disk drive statuses of computers to see if there are any cross-linked or find other types of problems with the drive. This command is an external command and is available in many Microsoft operating systems including all versions of MS-DOS.
- On DOS systems, when users run Chkdsk, there is the potential of a bug that can corrupt data stored on the computer. This bug generally happens to disks that have a storage capacity of approximately 128 MB. However, this bug has since been corrected in the version MS DOS 5.0a.
- On Windows NT systems, you can run Chkdsk from the Windows Shell, the Windows Recovery Console or the Windows Command Prompt. The process of running Chkdsk can be rather time-consuming, and in some cases the results will not be easily visible unless you check the "Application Log" of your systems.
- Running Chkdsk is beneficial because it helps your computer run properly and prevents it from becoming unstable. If you run Chkdsk you can detect if your hard drive disk has become corrupt for any reason. This is because Windows maintains "meta-data" on every file located within the computer.
- Running Chkdsk can be a very tedious and time-consuming process. How long the process will take depends on certain factors, such as disk size, the general and overall speed of your computer, the amount of files and directories on the disk, and also the amount of RAM your computer has.











