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If Disk Utility reports operation successful or repaired, you’re free to restart your computer. Click Run to check and repair errors in this drive.Click First Aid on the top menu of Disk Utility.Select the drive or volume that you want to repair in the left sidebar here, it should be Macintosh HD.Click on View and choose Show All Devices to list all detected disks and volumes.
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MACBOOK PRO STARTUP DISK DOWNLOAD MAC OS
A new Mac OS is designed to improve user experience.
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Apple releases major Mac operating system updates annually, while minor system updates happen every two or three months.