Scandisk / Error-checking

Scandisk (also known as Error-checking in Windows 2000/XP) is a program designed to read a disk, and to detect and correct problems with the data structure on the disk. It can also detect defects and damaged areas of the hard drive and will mark them to prevent further data loss.

Why should I run Scandisk?

When programs are stopped abruptly, many times a number of data errors and corruption can occur. This can be caused by a program locking up, or even the computer losing power or being accidentally shut off.

When this happens, sometimes data is lost or may be changed in a way that can slow the computer down or cause further crashes and errors. Scan disk will check your disk and if errors are found, it will attempt to repair or at least prevent further damage if possible.

When should I run Scandisk?

You should run Scandisk anytime you suspect a problem of this type, and as a preparatory step before installing new software. You should also run Scandisk before running a disk defragmenting program, although most defrag programs will prompt you to run Scandisk before they begin.

How do I run Scandisk?

Either (1) click Start, Programs, Accessories, System Tools, Scandisk or (2) double-click My Computer, then right click on the desired drive, click Properties, click the Tools tab, and select Error Correcting Status (or Error-checking).

Standard checking is generally sufficient for normal disk checking at any time. Thorough checking tests a disk's surface for data damage and physical damage, but requires significantly more time. It should be used for regularly scheduled maintenance rather than spur of the moment tests.

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