Repair Boot Disk in Mac OS X with Disk Utility & Recovery HD

If you have tried to repair the boot volume before in Mac OS X before, you’ll undoubtedly have found the “Repair Disk” option is grey and unavailable within the Disk Utility tool.…

Hard drive issues. HD won't reformat or repair permissions

OS X Base System only disk available - Apple Community

2010 MacBook Pro stuck in update loop - Apple Community

How to restore system files on a Mac when the hard drive is corrupted, without losing any important data - Quora

How to restore system files on a Mac when the hard drive is corrupted, without losing any important data - Quora

How to Verify & Repair Mac Disk from Command Line

Does anyone know how to fix error -69845 in disk utility?

How to repair a Mac disk with Disk Utility - Apple Support (CA)

Fixed Mac Recovery Mode Not Working [Ventura/Monterey] - EaseUS

How to erase and restore your Mac to factory settings

Repair and Maintain Your Mac Using Recovery Mode

How to Verify & Repair Permissions in OS X El Capitan

How to Format a Mac Hard Drive With Disk Utility