Nov 19, 2019 · There are a couple of ways to get around the problem, so you can check and repair your Mac’s normal startup drive. The methods include starting up from your OS X Recovery HD volume, or another drive that contains OS X. (Please note: If you're checking a Fusion drive, you must start up with OS X 10.8.5 or later.
How to repair permissions on Mac - MacPaw Jan 15, 2019 What to Do If EFI Partition Gets Corrupted on Mac System To start with, reboot your Mac. Then, hold down “Command + R” key button during reboot until the loading screen appears. In the “OS X Utilities” screen, you need to connect Mac to Internet. After that, you can choose “Reinstall OS X” Next, choose the target hard drive to reinstall Mac system onto. Repair Your Mac's Drives With Disk Utility's First Aid
How to fix “macOS needs to repair your Library to run
Mar 10, 2014 · Basics of Mac - How to recover permanently deleted/ lost files on a macbook air, pro, Mac OSX - Duration: 9:36. Carl Saptarshi 252,099 views
Apple Mac OS X 10.11 El Capitan Recovery Repair Reinstall
About macOS Recovery - Apple Support Mar 24, 2020 How to Repair Disk and File System Problems on Your Mac Jul 05, 2017