If you are running the File Allocation Table (FAT) file system, which is not a secured file system, you should consider converting to the NTFS file system.
Secured file systems, such as NTFS, are a key component of security because they restrict user access to data. By using file system security, you can you can tell your computer which users are allowed to access individual files and what type of access they are allowed (for example, read or modify). NTFS protects your data by preventing unwanted user access to it.
Note: You need to manually secure your files by using Access Control Lists (ACLs). To do this, right click the file or folder to which you want to control, click Properties, click the Security tab, and then specify the appropriate access restrictions for the file.
Convert your system from FAT to NTFS. For more information, view the documentation below on using NTFS and how to convert drives to NTFS.
Default Access Control Settings in Windows 2000
How to Restore the Default NTFS Permissions for Windows 2000
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