You've just installed a third hard drive, and when you start Windows NT, you notice something strange. Your new drive is D: and your former D: drive is now E:. The result is that none of the applications on your E-drive work anymore ù Windows expects them to be on D:. What should you do?

Fortunately, Windows NT comes with a tool to deal with this situation. Choose StartûProgramsûAdministrative Tools (Common)ûDisk Administrator. Click one of the partitions whose drive letters you want to change. Choose ToolsûAssign Drive Letter. Select a drive letter from the Assign drive letter drop-down list. You can't choose a drive letter that is already assigned, so for this step pick any letter that isn't used. Click OK, then click Yes to acknowledge that the change will happen immediately.

Now select the second partition, and follow the same steps to assign this partition the desired letter.

Finally, select the first partition again and change it to its final drive letter. In the example above, you would first change the E: drive to F: (or another unassigned drive letter), then change D: to E:, and finally change F: to D:. This tip works for hard drive partitions and CD-ROMs but not for removable media such as Iomega Zip or Jaz drives nor recordable CD-ROM drives.