How to Delete Files External Hard Drive Mac?

admin | Data Erasure Data Wipe how to | 5 minutes read | Modified on: 27-05-2026

Connecting an external hard drive to a Mac machine is one of the simplified ways to extend the storage space, back up sensitive data, or transfer large-size video files. However, several users—especially the ones moving from Windows to MacOS—constantly find themselves in a confusing roadblock: they try to delete files external hard drive Mac, but the storage doesn’t improve.

Organizing external drive on macOS isn’t inherently tricky, but it does require appropriate understanding of a few traits of an Apple ecosystem. Whether you are dealing with a stubborn file that is difficult to delete, or trying to know why external drive is suddenly “Read-Only,” this complete guide will highlight different methods and troubleshooting step to erase files successfully and recover your space.

The Basics: The Usual Ways to Delete Files on Mac

For a perfectly configured external hard drive, deleting files on a Mac follows the same simple protocol as deleting local files.

Method 1: The Drag-and-Drop

  1. Run Finder and select your external hard drive by navigating to the left sidebar under Locations.
  2. Go to the file or folder you want to discard.
  3. Click and hold the item simultaneously, then drag it down to the Trash icon appearing at the complete right of your Mac’s Dock.

Method 2: The Right-Click Menu

  1. Open external drive in Finder.
  2. Right-click (or holding Control and click) on the file.
  3. Select Move to Trash from the appearing dropdown menu.

Method 3: Keyboard Shortcuts (The Pro Way)

  1. Select the file you need to delete.
  2. Press Command + Delete on a keyboard.

The Top Rule: Emptying Data from the Trash

Here is the number one reason Mac users think their external hard drives are broken: deleting a file does not actually free up space until you empty the Trash.

After a user delete files from an external drive, macOS not able to take additional step to send the information to the Mac and erase it from the drive. Instead, it makes hidden folder on an external drive as .Trashes and move deleted files in the same. The files will become invisible but somehow still occupying space in an external drive.

You may reclaim that space by deleting the files from .Trashes folder using the steps discussed below –

  • Go to Trash icon appearing on your Dock, right-click on it and tap Empty Trash.
  • Alternatively, use Command + Shift + Delete shortcut key when Finder is open.

Quick Note: In case the external drive is disconnected before the Trash is being completely emptied, the files will then no longer display in the Trash on Mac but the space is still occupied by them. In order to delete files permanently, it is necessary to connect external drive again and Trash need to be emptied.

Troubleshooting: Reasons for Inability to Delete Files

If you followed the steps earlier and were still not successful, then you are not going to be the first. Let’s take a look at the three most common reasons that are not allowing to erase files from external media.

1. The Drive is Formatted to NTFS (Windows Exclusive)

The most frequent error is file system incompatibility. NTFS is the file system developed by Microsoft for Windows. By default, macOS is able to read (open and copy from) NTFS drives, but is not able to write to (add, modify, or delete from) NTFS drives.

To check:

1. Right-click the external drive icon on the desktop or sidebar.

2. Select Get Info.

3. Look next to Format. If it says “Windows NT File System (NTFS),” this is the culprit.

The Fixes:

  • When using your device exclusively with Mac: In that case, formatting the drive to formats such as APFS or Mac OS extended becomes necessary.
  • (Important: The process will wipe out all the data saved in the drive; therefore, be sure to backup all the data before the formatting procedure.)
  • In case switching between Mac and Windows: Formatting to ExFAT is recommended since it provides full read/write access to both operating systems.
  • When you are unable to erase your drive: You can consider installing an external NTFS driver for your Mac, including Paragon NTFS or Tuxera NTFS.2. Permissions Are Locked

At times, users with Mac’s user account do not hold necessary administrative benefits to modify files on that specific external drive.

The Fix:

  1. Go to external drive, right-click on it and select Get Info.
  2. Scroll until you see Sharing & Permissions section.
  3. Click the Lock icon in the bottom corner and specify your Mac password to make changes.
  4. Check the box that says “Ignore ownership on this volume.” This tells your Mac to treat all files on the drive as accessible to any user on that machine, allowing you to delete items freely.

3. “In Use” or “Locked” File

When you encounter the error message saying that the file could not be removed since the file is in use or locked, macOS is actually ensuring the data’s safety.

Solution:

  • Close all applications that may be accessing the file such as video editors, photos, and Microsoft Word.
  • Right-click the file, then click “Get Info.” Check whether the “Locked” option under the General tab is unchecked.

Advanced Techniques: Going Nuclear

If Finder doesn’t comply, then there are ways around the usual user interface provided by your operating system for advanced users.

Step 1: Skip the Trash Bin (Immediately Delete the File)

If you want to avoid the need to send the file through your Trash, follow these steps:

1. Locate your file on the external drive.

2. Click on the file to select it.

3. Hold down Option + Command + Delete.

4. A warning message will show up asking you if you’re sure you want to remove the item. Click Delete.

Step 2: Using the Terminal

The Terminal is the tool that lets you run commands on your operating system directly. Do not proceed with this method unless you really know what you are doing, because you could accidentally delete something important.

1. Open Terminal (using Spotlight or by accessing it through Applications > Utilities).

2. Typically type rm -f but keep in mind to put a space after -f.

3. Drag the item you wish to delete directly into the Terminal from Finder. This will input the exact location of the file automatically. 4. Press Enter. Your file will get instantly deleted. For deleting folders, simply replace rm -f with rm -rf.

Professional Approach

Another powerful and recommended way to implement the necessary task is MacMister Data Wipe Software for Mac. The application has multiple wiping methods and filters that will help users deleting files external hard drive Mac according to their requirements. It is budget-friendly, secure, and easy to manage. Anyone can utilize it and delete all the files permanently within seconds.

Epilogue

By understanding how macOS handles external volumes, you can keep your external hard drives clean, organized, and running at peak performance. Here we have discussed different procedures to fix “how delete files external hard drive Mac”. You may use the one that looks more suitable to you and execute the process without any issues.