How to Audit a USB Drive or Old Hard Disk Before You Archive It

Before you box up an old external hard disk, hand down a USB drive, or wipe one for reuse, there is usually a nagging question: what is actually on it? Plugging it in and clicking through folder after folder rarely gives a real answer, and by the time you are done you still cannot say for certain what you have or whether anything important got missed.

This guide shows a faster way to answer that question for good: scan the whole drive once and export a complete, structured Excel inventory of everything on it before you archive, hand over, or dispose of it.

Why Audit a Drive Before Archiving It

Old drives tend to accumulate years of backups, half-finished projects, and files nobody remembers copying in the first place. Archiving or discarding one without a real inventory means you are trusting memory alone, which is exactly how important files get lost. A proper audit gives you a record of what was on the drive, so you can confirm nothing critical is being left behind and have a reference to search later if you ever need to recall whether a file existed.

Step-by-Step: Audit a USB Drive or External Disk

1. Plug in the USB drive or external hard disk and let it mount normally
2. Open the Folder Report Generator in your browser
3. Select the drive as the folder to scan
4. The tool reads file names, paths and metadata locally — nothing is uploaded
5. Download the multi-sheet Excel report as a permanent record of the drive’s contents

What to Look for Before You Archive or Discard a Drive

Once you have the report, three things are worth checking before the drive gets boxed up or wiped: the largest files, in case a huge video or disk image is easy to move somewhere more useful; duplicate file names, which often reveal the same backup copied onto the drive more than once; and the oldest files, which tell you how far back the drive’s contents actually go and whether it is safe to let it gather dust.

Handing a Drive to Someone Else

If you are passing a drive on to a colleague, client, or family member, attaching the exported Excel sheet gives them an instant table of contents instead of forcing them to explore the drive blind. It also gives you a dated record of exactly what was handed over, which is useful if questions come up later about whether a particular file was included.

Is It Safe to Scan a Drive This Way?

Yes. The scan runs entirely inside your browser using your device’s native file system access, the same way a file explorer window works. File contents are never read or transmitted — only file names, paths and metadata are used to build the report — and nothing is uploaded to a server at any point.

Frequently Asked Questions