Sudden elimination of the running application.Lost or corrupted data on the hard drive.Inability to open particular files or programs.However, it can still fail to fix some of them or even deliver error messages like “Couldn’t Unmount Disk” error.ĭue to the “Couldn’t Unmount Disk” error users might encounter these problems as well: Disk Utility is an important feature that helps to solve problems on the system.
“Couldn’t Unmount Disk” is the error that, in most cases, appear when users try to format internal disk by Disk Utility or repair it on the Mac device. To repair damaged system, you have to purchase the licensed version of Mac Washing Machine X9 Mac Washing Machine X9.