mac partition failed cannot unmount disk

In case the error still occurs, try repairing the drive using the USB boot drive method. Step 5: Click the unmount button in the toolbar or beside the disk set name.Īfter following these steps, you can erase the Mac hard drive volume. Step 4: In the Disk-Utility app, select the disk that you want to unmount in the sidebar.

Step 3: Double-click on the Disk Utility icon.

Step 2: Type Disk Utility in the search field. Step 1: Click on the Spotlight icon from the menu bar. To access the disk utility, follow the step below: To unmount the volume, start by accessing the disk utility. The simplest solution to unmount volume for repair is to unmount the disk on disk utility. Method 1: Right Steps to Unmount Volume for Repair on Disk Utility

Method 4: Repair with a recovering partition.

Method 1: Right Steps to Unmount Volume for Repair on Disk Utility.

Let's drill down to the four possible solutions that can be used to fix the 'Couldn't Unmount Disk' error on Mac: There are several ways to fix the disk error. Part 2 - 4 methods to fix 'Couldn't Unmount Disk' on mac Other causes can be system related like Error in Bootstrap, Improper Kernel Installation, Hardware or Software crash, and many more. These are a few of the reasons that prompt the 'Couldn't Unmount Disk' error. It can be due to the software or accessing an unauthorized website.

Virus attack: Malicious attacks can harm the data.

Forced or unintentional formatting of data: Unknowingly deleting some system files or data files can result in data loss or faulty disk error.

Interrupting Read/Write operations: In the hurry of working or accessing the data, sudden interruption in the system process can result in data loss or data corruption.

Human error: Deleting or formatting the files or data improperly in between the ongoing operations can cause disk error.

The other reasons for 'Couldn't Unmount Volume' error are: The causes of this error are several, starting with the abrupt shutdown and inconsistent file system. What causes the 'Couldn't Unmount Volume' error?

Usually, the error 'Couldn't Unmount Disk' shows up when you try to format, partition, verify or repair internal disk by Disk Utility on Mac system.

Unmounting a disk means disconnecting a disk drive or optical disk from the computer.

To know about the solutions, first, let's understand about unmounting and disk utility, and the causes of the disk error. Part 1- What does 'couldn't unmount disk' mean?

Part 4 - Learn, 'How to Use Disk Utility?'.

Part 3 - Recover lost files on Mac after all methods fail.

Part 2 - 4 methods to fix 'Couldn't Unmount Disk' on Mac.

Part 1 - What does' couldn't unmount disk mean?.

Mac partition failed cannot unmount disk