In the sidebar of Disk Utility, select startup disk ( Macintosh HD) that contains macOS Catalina 10.15.Release the keys once you see the Apple logo. Restart Mac & press- Command + R keys together.If your MacBook is running slow after Catalina 10.15 upgrade or your iMac is crashing, then don't hesitate to fix your Mac’s in-built storage drive (SSD or HDD).ĭisk Utility Repair Video Tutorial and Steps are as follows: Doing so is easy since Disk Utility is the best free tool available on macOS to repair a drive. Repair macOS Catalina Startup DiskĪt some point in time, you might require to fix macOS Catalina startup disk. In such a case, opt for repairing startup disk to retrieve the lost data. For instance- backing up startup disk on macOS Catalina to prevent loss of data in case of potential failure of the storage drive.
But, you should follow a few essential steps after macOS upgrade to ensure smooth functioning of your Mac. As a Mac user, you rejoice every time Apple rolls out a new macOS.
