Step 2: Choose the disk you need to repair. Choose the Disk Utility and click Continue to open it. Start Mac in recovery mode and you could see four options that it provides to resolve hardware or software issues. Step 1: Get to Disk Utility on Mac startup.

Now let's see how Disk Utility checks and repairs disk errors. And utilities available in Mac recovery boot, such as Disk Utility, reinstall macOS etc could fix the disk issues. Way 1: Repair Disk Errors with Disk Utility in Mac Recovery ModeĪs we know, while your Mac cannot boot normally, several boot options can help to fix problems. Way 2: File system check in single user mode.

Otherwise, not only you cannot boot Mac, but also you will lose many important files or folder on Mac.įortunately, two built-in utilities have been created in Mac for the problem. So it is urgent to check out the disk errors and repair them in time while you encounter this problem. Undoubtedly, there are lots of reasons that can lead to failed Mac boot. 2 Ways to Verify and Repair Mac Disk Errors

Mac dvd drive repair