Back up files to an external hard drive

By Threat Simplified Team8/21/2025

Back up files to an external hard drive

Back up files to an external hard drive

Back up files to an external hard drive

You wouldn’t want to lose important documents or sentimental photos, backing up your computer files ensures that everything you cherish is safe from unexpected accidents or technical failures. In this guide, I’ll walk you through the simple steps to back up your files to an external hard drive, making sure you can keep your important data secure.

Prerequisites

Before we get started, here's what you’ll need:

  • An external hard drive that connects to your computer (via USB or other means).
  • A computer (Windows or Mac) with files you want to back up.

Estimated Time to Complete

This process should take about 15-30 minutes, depending on how many files you want to back up.

Steps

  1. Connect your external hard drive to your computer using the USB cable. Wait for it to be recognized. Look for a notification or an icon on your desktop.

    Screenshot showing external drive connection

  2. Locate the files you want to back up on your computer. You can find them in folders like Documents, Pictures, Music, etc.

    Screenshot showing file explorer

  3. Open File Explorer (Windows) or Finder (Mac). This is how you'll access files on your computer.

    Windows: Click on the folder icon in your taskbar.
    Mac: Click on the Finder icon in the dock.

    Screenshot showing File Explorer on Windows
    Screenshot showing Finder on Mac

  4. Select the files or folders you want to back up. You can click to select individual files or hold down the Ctrl key (Cmd key on Mac) to select multiple files.

    Screenshot showing selected files

  5. Copy the files by right-clicking on the selected files and choosing "Copy." Alternatively, you can press Ctrl+C (Cmd+C on Mac) on your keyboard.

    Screenshot showing copy option

  6. Go to your external hard drive in File Explorer or Finder. You can find it listed under "This PC" (Windows) or under "Devices" (Mac).

    Screenshot showing external drive in File Explorer

  7. Paste the files by right-clicking in the window of the external hard drive and choosing "Paste." You can also press Ctrl+V (Cmd+V on Mac).

    Screenshot showing paste option

  8. Wait for the files to copy. Depending on the size of your files, this may take a moment. Once it's done, double-check to make sure all your important files are there.

    Screenshot showing copying progress

  9. Eject your external hard drive safely before unplugging it. Right-click on the drive icon and select "Eject." This prevents file corruption.

    Screenshot showing eject option

Troubleshooting Tips

  • Drive not appearing? Make sure it’s properly plugged in, or try a different USB port.
  • Files not copying? Check if the file is already in use or if there isn’t enough space on your external hard drive. If there’s a storage issue, consider freeing up some space or selecting fewer files.

If you’re unsure, it’s okay to stop and ask for help before trying again.

Expected Outcome

By following these steps, you should have successfully backed up your important files to your external hard drive. This means that even if something happens to your computer, you can still access your files and keep your memories safe.


Password Tip

When storing files, ensure that you're using a strong password for any folders containing sensitive information. Use at least 12 characters with a mix of letters, numbers, and symbols. Avoid names or birthdays.

Happy backing up! Your data safety is well worth the effort!

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