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My Files Disappeared from External Hard Drive on Mac
Quote from aliens on March 26, 2026, 11:38 pmSo I've had this 2TB WD external drive for like five years. Mostly family stuff – vacations, birthdays, and photos of my grandparents. I moved from Windows to Mac about eight months ago, and the drive has been fine since then.
Last night I was copying a few folders to my MacBook, and everything looked totally normal. Opened it this morning and just... empty folders. Storage still shows 1.3TB used. Drive mounts fine in Finder, Disk Utility doesn't show any errors. Nothing. But the files are just gone.
I honestly don't even know where to start. Spent like an hour googling how to find files on external hard drive Mac, and everything just says check Finder or restart – not helpful. Has anyone had files disappear from an external hard drive on a Mac like this? Where do I even begin?
edit: it's an NTFS drive if that matters, used it on Windows before switching
So I've had this 2TB WD external drive for like five years. Mostly family stuff – vacations, birthdays, and photos of my grandparents. I moved from Windows to Mac about eight months ago, and the drive has been fine since then.
Last night I was copying a few folders to my MacBook, and everything looked totally normal. Opened it this morning and just... empty folders. Storage still shows 1.3TB used. Drive mounts fine in Finder, Disk Utility doesn't show any errors. Nothing. But the files are just gone.
I honestly don't even know where to start. Spent like an hour googling how to find files on external hard drive Mac, and everything just says check Finder or restart – not helpful. Has anyone had files disappear from an external hard drive on a Mac like this? Where do I even begin?
edit: it's an NTFS drive if that matters, used it on Windows before switching
Quote from AlexR on March 26, 2026, 11:40 pmIf it still shows 1.3TB used, that’s actually a good sign. When external drive files are missing, but space is still used, it usually means the data isn’t gone; macOS just can’t see it properly.
NTFS is the key thing here. Finder sometimes just pretends files aren’t there on NTFS drives, even when the drive mounts totally fine. I had almost the same thing happen with my Seagate Backup Plus last year.
Try this first:
Press Cmd + Shift + . in Finder. That shows hidden files. I’ve seen drives look empty just because of hidden flags. Also, right-click one of those empty folders and check the permissions.
Don’t touch any repair tools yet.
If it still shows 1.3TB used, that’s actually a good sign. When external drive files are missing, but space is still used, it usually means the data isn’t gone; macOS just can’t see it properly.
NTFS is the key thing here. Finder sometimes just pretends files aren’t there on NTFS drives, even when the drive mounts totally fine. I had almost the same thing happen with my Seagate Backup Plus last year.
Try this first:
Press Cmd + Shift + . in Finder. That shows hidden files. I’ve seen drives look empty just because of hidden flags. Also, right-click one of those empty folders and check the permissions.
Don’t touch any repair tools yet.
Quote from aliens on March 26, 2026, 11:42 pm@alexr tried the Cmd+Shift+. thing, nothing changed, folders still look empty. Permissions look normal, too.
So if it mounts fine, but I still can’t see files on the external hard drive on Mac... does that point to file system corruption or something with the directory structure? I really don’t want to lose these photos, especially the ones of my grandparents.
@alexr tried the Cmd+Shift+. thing, nothing changed, folders still look empty. Permissions look normal, too.
So if it mounts fine, but I still can’t see files on the external hard drive on Mac... does that point to file system corruption or something with the directory structure? I really don’t want to lose these photos, especially the ones of my grandparents.
Quote from DataNerd on March 26, 2026, 11:44 pmok so this is going to sound blunt, but you’re probably fine. This is textbook NTFS + Mac weirdness. The drive mounts, space is used, no hardware symptoms. It’s almost certainly a broken file index or directory corruption, not actual data loss.
I’ve seen this exact thing maybe a dozen times on r/datarecovery. NTFS external hard drive files disappeared on Mac, space still used, no error. every time – file index. every single time.
Run a read-only scan. Don’t repair anything yet. Just look.
ok so this is going to sound blunt, but you’re probably fine. This is textbook NTFS + Mac weirdness. The drive mounts, space is used, no hardware symptoms. It’s almost certainly a broken file index or directory corruption, not actual data loss.
I’ve seen this exact thing maybe a dozen times on r/datarecovery. NTFS external hard drive files disappeared on Mac, space still used, no error. every time – file index. every single time.
Run a read-only scan. Don’t repair anything yet. Just look.
Quote from chris_89 on March 31, 2026, 8:42 pmAgree with the others. The empty folders with used space are almost always a corrupted file index or a directory structure issue. Not physical failure.
Since you’ve been switching between Windows and Mac on the same NTFS drive, that’s a pretty common trigger for this. macOS’s write support for NTFS isn’t great, and sometimes it just mangles the directory entries.
One thing to check: does the drive make any noise? Clicking or grinding? If it’s quiet, you’re almost certainly dealing with a software-level issue, not hardware.
Agree with the others. The empty folders with used space are almost always a corrupted file index or a directory structure issue. Not physical failure.
Since you’ve been switching between Windows and Mac on the same NTFS drive, that’s a pretty common trigger for this. macOS’s write support for NTFS isn’t great, and sometimes it just mangles the directory entries.
One thing to check: does the drive make any noise? Clicking or grinding? If it’s quiet, you’re almost certainly dealing with a software-level issue, not hardware.
Quote from aliens on March 31, 2026, 8:44 pm@chris_89 completely silent. Opens instantly too, no lag, no spinning beachball. Just empty folders.
@DataNerd, what do you mean by read-only scan exactly? Like in Disk Utility or a third-party app? I don’t want to accidentally write anything to the drive.
@chris_89 completely silent. Opens instantly too, no lag, no spinning beachball. Just empty folders.
@DataNerd, what do you mean by read-only scan exactly? Like in Disk Utility or a third-party app? I don’t want to accidentally write anything to the drive.
Quote from DataNerd on March 31, 2026, 8:45 pmlol no not disk utility. Disk utility uses First Aid, which writes to the drive and could complicate things.
I mean a data recovery app in read-only mode. Disk Drill has a scan that doesn’t touch the drive at all, just reads. Run that and see if it finds your files in preview. If it does, that’s basically confirmation that the data’s still there.
lol no not disk utility. Disk utility uses First Aid, which writes to the drive and could complicate things.
I mean a data recovery app in read-only mode. Disk Drill has a scan that doesn’t touch the drive at all, just reads. Run that and see if it finds your files in preview. If it does, that’s basically confirmation that the data’s still there.
Quote from bryan on March 31, 2026, 8:46 pmok hold on. why is everyone jumping straight to third-party recovery software? First Aid exists for exactly this kind of thing. if it’s a minor file system corruption it’ll just fix it. that’s what it’s designed for.
not saying do it blind, but acting like running First Aid is going to nuke the drive is a bit much.
ok hold on. why is everyone jumping straight to third-party recovery software? First Aid exists for exactly this kind of thing. if it’s a minor file system corruption it’ll just fix it. that’s what it’s designed for.
not saying do it blind, but acting like running First Aid is going to nuke the drive is a bit much.
Quote from DataNerd on March 31, 2026, 8:48 pm@bryan because it’s NTFS. macOS First Aid does not repair NTFS properly. It’s designed for HFS+ and APFS. on an NTFS drive, it can rewrite metadata and make the actual recovery harder. This isn’t a hot take; it’s just how it works.
@bryan because it’s NTFS. macOS First Aid does not repair NTFS properly. It’s designed for HFS+ and APFS. on an NTFS drive, it can rewrite metadata and make the actual recovery harder. This isn’t a hot take; it’s just how it works.
Quote from bryan on March 31, 2026, 8:49 pm@DataNerd ok fine, NTFS is a fair point. still think people act like First Aid is a nuke button when 90% of the time it just... works. But yeah, on NTFS specifically i’ll give you that one.
@DataNerd ok fine, NTFS is a fair point. still think people act like First Aid is a nuke button when 90% of the time it just... works. But yeah, on NTFS specifically i’ll give you that one.
Quote from Ryan404 on March 31, 2026, 8:51 pmJumping in because I had almost this exact situation six months ago. A 4TB NTFS drive, used on both Windows and Mac, suddenly showed empty folders with full storage. Turns out it was a corrupted directory structure, not actual data loss on the external drive.
What saved me: I ran a read-only scan first, confirmed the files were visible in preview, then recovered to a different drive before doing anything else. The original drive is still sitting in a drawer. One day, I’ll actually reformat it properly.
Moral: don’t write anything to the original drive until you have the files somewhere safe.
Jumping in because I had almost this exact situation six months ago. A 4TB NTFS drive, used on both Windows and Mac, suddenly showed empty folders with full storage. Turns out it was a corrupted directory structure, not actual data loss on the external drive.
What saved me: I ran a read-only scan first, confirmed the files were visible in preview, then recovered to a different drive before doing anything else. The original drive is still sitting in a drawer. One day, I’ll actually reformat it properly.
Moral: don’t write anything to the original drive until you have the files somewhere safe.
Quote from DataRecoverExpert on March 31, 2026, 8:52 pmTo summarize what's happening technically: when NTFS external hard drive files disappear on Mac, it's usually one of three things – a corrupted file index, a broken directory structure, or a mount error that's hiding the partition. Given the symptoms here (drive mounts fine, no hardware noise, space still shows used), the most likely cause is a corrupted file index or directory structure corruption.
The fact that you can't see files on the external hard drive on Mac, despite it mounting normally, is a classic sign of this. macOS can't read the NTFS file table properly, so Finder shows empty folders even though the actual data blocks are intact.
Before anything else, don't write to the drive, don't run repair tools, don't reformat. The sequence that makes sense here:
- Run a read-only scan with Disk Drill or similar. Just to see if the files appear in preview. No changes to the drive.
- If files show up, recover to a separate drive first.
- Only after you have confirmed copies should you think about repair or reformat.
You can find more details on each step in this guide, and there's a useful comparison of recovery tools if you want to see how Disk Drill stacks up against alternatives.
One more thing for after you recover: since you're using this drive on both Mac and Windows, consider reformatting to exFAT once your files are safe. It's natively supported on both systems and avoids exactly this kind of NTFS compatibility headache going forward.
To summarize what's happening technically: when NTFS external hard drive files disappear on Mac, it's usually one of three things – a corrupted file index, a broken directory structure, or a mount error that's hiding the partition. Given the symptoms here (drive mounts fine, no hardware noise, space still shows used), the most likely cause is a corrupted file index or directory structure corruption.
The fact that you can't see files on the external hard drive on Mac, despite it mounting normally, is a classic sign of this. macOS can't read the NTFS file table properly, so Finder shows empty folders even though the actual data blocks are intact.
Before anything else, don't write to the drive, don't run repair tools, don't reformat. The sequence that makes sense here:
- Run a read-only scan with Disk Drill or similar. Just to see if the files appear in preview. No changes to the drive.
- If files show up, recover to a separate drive first.
- Only after you have confirmed copies should you think about repair or reformat.
You can find more details on each step in this guide, and there's a useful comparison of recovery tools if you want to see how Disk Drill stacks up against alternatives.
One more thing for after you recover: since you're using this drive on both Mac and Windows, consider reformatting to exFAT once your files are safe. It's natively supported on both systems and avoids exactly this kind of NTFS compatibility headache going forward.
Quote from JohnMiller on March 31, 2026, 8:54 pmQuick question – do you have a Time Machine backup or any secondary copy of those photos? Even a partial one?
Not trying to pile on, just asking because it changes the priority a bit. If there’s a backup somewhere, you can afford to be slower and more careful with the drive. If not, the read-only scan first approach is definitely the right call.
Quick question – do you have a Time Machine backup or any secondary copy of those photos? Even a partial one?
Not trying to pile on, just asking because it changes the priority a bit. If there’s a backup somewhere, you can afford to be slower and more careful with the drive. If not, the read-only scan first approach is definitely the right call.
Quote from aliens on March 31, 2026, 8:55 pm@JohnMiller ...no backup. I know, I know. Won’t happen again after this.
Running the Disk Drill scan now. It’s going through the “Reconstructed” and “Lost Files” sections. I can see folder names already, some of them I recognize. Holding my breath.
@JohnMiller ...no backup. I know, I know. Won’t happen again after this.
Running the Disk Drill scan now. It’s going through the “Reconstructed” and “Lost Files” sections. I can see folder names already, some of them I recognize. Holding my breath.
Quote from OhioTom on March 31, 2026, 8:57 pmThe “Lost Files” and “Reconstructed” sections are good signs. That’s where it puts stuff it found in the file system that isn’t properly indexed anymore. If you can see folder names you recognize, the data is almost certainly still there.
The “Lost Files” and “Reconstructed” sections are good signs. That’s where it puts stuff it found in the file system that isn’t properly indexed anymore. If you can see folder names you recognize, the data is almost certainly still there.
Quote from phillyjohn on March 31, 2026, 8:58 pmYeah, same experience here. My drive showed empty folders after I moved from Windows to Mac. Same NTFS situation. Ran a scan and almost everything came back. The “Reconstructed” section had most of my stuff.
The only files I lost were some that had been partially overwritten before I stopped using the drive. Since you caught this early and haven’t written anything, you should be in good shape.
Yeah, same experience here. My drive showed empty folders after I moved from Windows to Mac. Same NTFS situation. Ran a scan and almost everything came back. The “Reconstructed” section had most of my stuff.
The only files I lost were some that had been partially overwritten before I stopped using the drive. Since you caught this early and haven’t written anything, you should be in good shape.
Quote from aliens on March 31, 2026, 9:01 pmUPDATE: okay. okay okay okay.
The scan found almost everything. I can see the folder structure – trips, birthdays, the folder with my grandparents’ photos, all showing up in preview. Some files have generic names, but the previews match. I’m recovering my MacBook’s internal drive right now. It’s going to take a while (about 180GB), but I can see them. I actually teared up a little when the 2019 folder came up.
@DataRecoverExpert, @DataNerd – thank you. Seriously. The read-only scan first advice probably saved these.
UPDATE: okay. okay okay okay.
The scan found almost everything. I can see the folder structure – trips, birthdays, the folder with my grandparents’ photos, all showing up in preview. Some files have generic names, but the previews match. I’m recovering my MacBook’s internal drive right now. It’s going to take a while (about 180GB), but I can see them. I actually teared up a little when the 2019 folder came up.
@DataRecoverExpert, @DataNerd – thank you. Seriously. The read-only scan first advice probably saved these.
Quote from em_on_pc on March 31, 2026, 9:04 pmCame here because the same thing just happened to me, external hard drive shows empty folders on my Mac, but space is still used. Following this thread for the scan tips. Hope mine goes as well as yours did.
Came here because the same thing just happened to me, external hard drive shows empty folders on my Mac, but space is still used. Following this thread for the scan tips. Hope mine goes as well as yours did.
Quote from phillyjohn on March 31, 2026, 9:05 pm@em_on_pc same steps as above should work. Run a read-only scan first, don't touch any repair tools. If space is still showing used, the data's most likely still there. Good luck.
@em_on_pc same steps as above should work. Run a read-only scan first, don't touch any repair tools. If space is still showing used, the data's most likely still there. Good luck.