If, while using your Mac, you notice that the system freezes frequently, folders disappear, and the computer becomes slow, these signs may indicate that your hard drive is corrupted.
On a Mac, repeated attempts with Disk Utility can make the case worse. If the files matter, see Bot’s hard drive recovery, which starts with a free diagnosis.
It can be caused by physical damage to the drive, a virus, firmware corruption or file system errors.
It can become a real headache, because its main consequence is data loss: once the drive is corrupted, access to your files may be compromised.
But don’t panic.
In this article, we’ll show you how to spot the warning signs of a failing hard drive, how to prevent the problem, and how to recover your data if your drive is already corrupted.
What are the symptoms of a corrupted hard drive on Mac?
Hard drives are particularly prone to failure because of the way they are built.
They have moving mechanical parts, and vibrations or sudden impacts can damage them.
Here are some common warning signs:
- Applications closing unexpectedly;
- Your Mac becomes unresponsive;
- Files that won’t open or that return errors;
- Difficulty moving files;
- In more severe cases, the Mac won’t boot at all.
How to prevent hard drive corruption on macOS?
To prevent hard drive corruption, keep your Mac away from liquids, dust and heat, and avoid knocks while it is in use.
It is also essential to keep up-to-date backups and to shut down your system properly.
Shut down your Mac properly
Avoid forced shutdowns. Always use the Apple menu and choose “Shut Down”.
This lets the system close all processes correctly and prevents file system corruption.
Monitor your hard drive
Checking your drive regularly helps you catch problems early.
If you notice unusual behavior, you can act quickly and prevent data loss caused by logical errors or bad sectors.
Use the First Aid feature in Disk Utility to check your drive.
Create regular backups
Use Time Machine to back up your data.
With a Time Machine backup, you can restore your system and files if the drive fails.
How to repair a corrupted hard drive on Mac?
There are several ways to recover a corrupted hard drive on a Mac. Before you start, keep in mind that repair tools write to the disk: if your data is important and you have no backup, or if the drive is making unusual noises, don’t run them and power the drive off. Here are the main options:
Repair using Disk Utility
Besides the graphical interface, you can use the diskutil command. Open Terminal and run:
diskutil repairVolume /Volumes/[Drive Name]
Replace “[Drive Name]” with the name of your volume and press Return.
You can also do the same in Disk Utility, using the First Aid option.
Use the fsck command
This command checks and repairs file system errors.
On older Intel Macs, start up in Single User Mode (Command + S). Macs with a T2 chip or Apple silicon (M1 and later) no longer have Single User Mode: start up in Recovery Mode and open Terminal instead.
Run the command below, replacing diskXsY with the partition identifier (you can find it with diskutil list). This works for HFS+ volumes; for APFS volumes, the default format since macOS High Sierra, use fsck_apfs -y instead:
/sbin/fsck_hfs -fy /dev/diskXsY
Repeat until the system reports that the volume is OK.
Use data recovery software
Tools like Disk Drill can help you recover files. Always save the recovered files to a different drive, never to the same one.
However, these tools do not fix the root cause of the problem and won’t help if the drive has a physical fault.
Seek professional help
In more serious cases, the best option is a professional data recovery service.
At Bot, we use advanced technology and a Class 100 (ISO 5) cleanroom to recover your data safely.
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Conclusion
A corrupted hard drive can show several warning signs before completely failing.
To avoid problems, follow good practices: shut down your Mac properly, monitor your drive and keep your backups up to date.
If the problem has already occurred and the drive has no physical damage, you can try the built-in tools or data recovery software.
However, in more complex cases, the safest option is to rely on professional help.
At Bot, we recover your data safely and efficiently, with a free diagnosis within 48 hours.
👉 Start your data recovery now
Need to recover the files? Bot runs a free diagnosis in its lab: see our hard drive data recovery service.
