As you probably know, you can run the Chkdsk.exe utility to see how much disk space is available and if any problems exist with the disk.

You can run Chkdsk.exe on a Windows XP system by right-clicking a drive letter in My Computer and selecting Properties. In the Properties dialog box, select the Tools tab, and click the Check Now button in the Error-checking section. This opens a dialog box with options for automatically fixing file system errors and attempting to recover bad sectors.

However, the command-line version of Chkdsk offers four additional parameters that apply only to NTFS-formatted disks. These parameters can be useful in a number of disk troubleshooting operations.

Here's a closer look at these parameters:

* /X--This forces the volume to dismount first. This operation invalidates all open handles to the drive.

* /I--This instructs Chkdsk to perform a less vigorous check of index entries, which reduces the amount of time needed to run Chkdsk.

* /C--This instructs Chkdsk to skip the checking of cycles within the folder structure, which reduces the amount of time needed to run Chkdsk.

* /L[:size]--This allows you to change the size of the log file to the specified size. If you omit the size parameter, /L displays the current size.