Have you ever needed to hide a drive on a system? For example, suppose you manage a system shared by multiple users in a public area, and you keep diagnostic and management applications on a separate drive.
Wouldn't it be nice to be able to hide that drive from users to prevent any mischievous exploration? You can do so with a simple registry edit.
Follow these steps:
You must restart the system or log out of Windows XP in order for the change to take effect.
To hide other drive letters that we didn't list, follow the pattern of doubling the number for each successive drive. For example, drive G: would have a value of 64.
To hide multiple drives, add the values together. For example, to hide drives A: and B:, use a value of 3. If you want to hide all drive letters, use a value of 67108863.
Note: Editing the registry is risky, so be sure you have a verified backup before making any changes.