Recover Files from External Hard Drive on Mac

Updated 6 November 2026 · Standard formula, shown below

If you’ve lost files on an external hard drive connected to your Mac, you can often recover them using built-in macOS tools or third-party recovery software. Start by checking the Trash and using Time Machine if you have backups, then move to dedicated recovery tools if needed. This guide covers the main recovery methods, what to do and avoid, and how to choose the right approach for your situation.

Why Files Disappear from External Drives

Files on an external hard drive can become inaccessible for several reasons, and understanding the cause helps you pick the right recovery method. Common scenarios include:

Accidental deletion: You deleted files and emptied the Trash, or used Shift+Delete on a Windows-formatted drive.
Drive not mounting: The drive appears in Disk Utility but not on the desktop or Finder sidebar.
Corrupted file system: The drive was unplugged without ejecting, suffered a power surge, or has bad sectors.
Formatting: You reformatted the drive, either intentionally or by mistake, and lost the data.
Virus or malware: Malware can hide or encrypt files, though this is less common on macOS.

In many cases, the data is still physically present on the disk; the file system just no longer points to it. That’s why recovery is often possible if you stop using the drive immediately.

First Steps: Stop Using the Drive

The most critical rule in data recovery is to avoid writing any new data to the drive. When you delete a file, macOS marks the space as available, but the actual data remains until overwritten. If you continue to use the drive—copying new files, running First Aid, or even mounting it normally—you risk overwriting the very data you want to recover.

If the drive is still connected, disconnect it safely (eject it) and don’t reconnect it until you’re ready to attempt recovery. If you need to recover files from a drive that won’t mount, you may need to connect it to another computer or use a different cable or port to rule out hardware issues.

Built-in macOS Recovery Options

Before investing in third-party software, try these free methods that come with macOS:

Check the Trash

If you deleted files recently, they might still be in the Trash. Open the Trash from the Dock, look for your files, right-click and select Put Back. If the files were on an external drive, they may appear in the Trash only when that drive is connected.

Time Machine

If you had Time Machine backups of the external drive, you can restore previous versions. Connect the external drive, open Time Machine from the menu bar, and browse through the timeline. Select the files you need and click Restore. Note that Time Machine only backs up drives you’ve explicitly included in its settings.

Disk Utility First Aid

If the drive is mounting but files are missing, the file system might be slightly corrupted. Open Disk Utility (in Applications/Utilities), select the drive, and click First Aid. This can repair directory errors that might make files invisible. However, First Aid can sometimes make things worse, so only run it if you have a backup or are prepared to use recovery software afterward.

Using Third-Party Recovery Software

When built-in methods fail, dedicated recovery software is the next step. These tools scan the raw disk for traces of deleted files and rebuild them. Popular options include Disk Drill, Data Rescue, and EaseUS Data Recovery Wizard, but there are many others. Here’s what to expect:

Download and install the software on your Mac’s internal drive, not on the external drive you’re trying to recover.
Connect the external drive and launch the software. It should list the drive; select it and start a scan.
Choose a scan type: Quick scan first, then deep scan if needed. Deep scans take longer but find more files.
Preview and recover: After the scan, you’ll see a list of recoverable files. Preview them to confirm they’re intact, then select and save them to a different drive.

Most tools offer a free trial that lets you scan and preview files, but you’ll need to purchase a license to actually recover them. Be wary of free tools that promise unlimited recovery—they often have hidden limitations or are outdated.

How to Choose the Right Recovery Software

With many options available, here are the key factors to consider:

File system support: Ensure the software supports APFS, HFS+, exFAT, FAT32, and NTFS (for Windows drives).
Recovery modes: Look for both quick and deep scan options, and support for specific file types (photos, documents, videos).
Ease of use: A clean interface with preview is essential, especially if you’re not tech-savvy.
Price: Compare one-time licenses vs. subscriptions. Some tools offer a free version with limited recovery (e.g., up to 2GB).
Reviews and reputation: Check independent reviews from reputable tech sites, not just the vendor’s website.

No software can guarantee 100% recovery, especially if the drive has physical damage. If the drive makes clicking noises or isn’t recognized at all, stop using it and consider professional recovery services.

When to Consider Professional Recovery

If the drive has physical damage (e.g., you dropped it, it makes unusual sounds, or it doesn’t power on), software recovery won’t work and could worsen the damage. In such cases, professional data recovery services use cleanroom environments to repair drives and extract data. This is expensive—often hundreds to thousands of dollars—so it’s usually reserved for irreplaceable data like family photos or business documents. Before sending your drive away, ask about their success rate, whether they charge for evaluation, and how they protect your privacy.

Preventing Future Data Loss

Recovery is never guaranteed, so prevention is far better. Here are practical habits to protect your data:

Use the 3-2-1 backup rule: Keep at least three copies of your data, on two different media, with one offsite. For example, one copy on your Mac, one on an external drive, and one in cloud storage.
Enable Time Machine: Set it to back up your Mac and any external drives you choose.
Eject drives properly: Always use the Eject button in Finder before unplugging.
Use a surge protector: Power surges can corrupt drives.
Monitor drive health: Tools like DriveDx can warn you of failing drives before they crash.

Frequently Asked Questions

Can I recover files from a formatted external hard drive on Mac?

Yes, formatting doesn’t immediately erase the data; it just creates a new file system. Recovery software can often find and restore files from a formatted drive, as long as you haven’t written new data to it. The sooner you attempt recovery, the better.

What’s the best free recovery software for Mac?

There’s no single “best,” but some reputable free options include Disk Drill (free trial with 2GB recovery), PhotoRec (completely free but command-line based), and TestDisk (also free, for partition recovery). Free tools may lack features or be less user-friendly, but they’re worth trying if you’re on a budget.

How long does a deep scan take?

It depends on the drive size and speed. A 1TB drive can take several hours to a full day. Quick scans are much faster, often under 30 minutes, but they only find recently deleted files. For best results, run a deep scan overnight.

Why doesn’t my external drive mount on my Mac?

Common causes include a faulty cable or port, the drive being formatted for Windows (NTFS) without proper drivers, or a corrupted file system. Try a different cable, check Disk Utility, and if the drive appears but won’t mount, you may need recovery software or professional help.

Can I recover files from a drive that makes clicking noises?

Clicking noises usually indicate a mechanical failure. Do not power on the drive again, as this can cause further damage. Contact a professional data recovery service immediately; they have specialized equipment to handle such cases.

Is it safe to use Disk Utility First Aid on a failing drive?

First Aid can repair directory errors, but on a physically failing drive, it can stress the drive and worsen the problem. If you suspect physical damage, skip First Aid and seek professional help. If the drive is just logically corrupted, First Aid is generally safe, but back up important data first if possible.

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