This 30-year old Windows feature lets you duplicate a file without wasting any storage

This 30-year old Windows feature lets you duplicate a file without wasting any storage

This 30-year old Windows feature lets you duplicate a file without wasting any storage

Windows has a built-in capability that helps you show the same file in multiple folders without creating additional copies. This technique, known as a hard link, makes one file appear in different locations while using only the original file’s storage.

Here’s a quick overview of what hard links do, when to use them, and how to create them safely on a Windows PC.

What is a hard link?

A hard link is another directory entry for the same underlying file on disk. Both the original path and the new path point to the same data blocks. Deleting one path does not remove the file’s data until all references are removed. This makes it possible to organize files across multiple folders without duplicating data.

When to use hard links

• When you need the same file available in several folders without consuming extra storage.
• To simplify workflows where a single file is used in multiple project directories.
• To reduce clutter from multiple copies of large files.

How to create a hard link in Windows

Note: You typically need administrator permissions to perform certain operations, and hard links can be created for files, not directories.

1. Open File Explorer and locate the file you want to link.
2. Hold the Shift key, right-click the file, and choose Copy as path.
3. Navigate to the folder where you want the link to appear.
4. Open a Command Prompt window in that folder (you can type cmd in the address bar and press Enter).
5. Use the mklink command to create the hard link:
   • Syntax: mklink /h "LinkName" "TargetPath"
   • Example: mklink /h "ProjectA\shared.txt" "C:\Projects\Shared\shared.txt"
6. Verify that the new link appears in the destination folder and that opening it accesses the same data as the original.

Tips for reliable use

• Keep the target file on a local drive with stable storage to avoid broken links.
• Avoid moving the target file to a different volume; hard links work within the same volume.
• Back up your important files regularly, even when using hard links, to prevent data loss from other issues.

Hard links offer a practical way to organize files efficiently on Windows. If you frequently need the same data in multiple folders, this feature helps keep storage usage minimal while preserving quick access.

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