How do I restore OS X?
How to start Mac in Recovery Mode
- Click on Apple logo at the top left of the screen.
- Select Restart.
- Immediately hold down the Command and R keys until you see an Apple logo or spinning globe.
- Eventually your Mac will show the Recovery Mode Utilities window with the following options:
How do I download and restore OS X?
Enter Recovery (either by pressing Command+R on an Intel Mac or by pressing and holding the power button on a M1 Mac) A macOS Utilities window will open, on which you will see the options to Restore From Time Machine Backup, Reinstall macOS [version], Safari (or Get Help Online in older versions) and Disk Utility.
What can I do to free up disk space on my Mac?
You may clean up a variety of System logs and temporary files to increase your Mac’s disk space. Use third party utilities like MainMenu or similar others can help you. Download and install, if you want to run these maintenance scripts. Clearing the cache could free space on your Mac.
How do I install OS on my Mac?
Open the disk image, then open the .pkg installer inside the disk image. It installs an app named Install [ Version Name ]. Open that app from your Applications folder to begin installing the operating system.
How can I upgrade Mac OS Sierra to Sierra 10.12?
Open the disk image, then open the .pkg installer inside the disk image. It installs an app named Install [ Version Name ]. Open that app from your Applications folder to begin installing the operating system. macOS Sierra 10.12 can upgrade El Capitan, Yosemite, Mavericks, Mountain Lion, or Lion
What do I need to upgrade my Mac to new OS?
Before you upgrade, we recommend that you back up your Mac. If your Mac is running OS X Mavericks 10.9 or later, you can upgrade directly to macOS Big Sur. You’ll need the following: OS X 10.9 or later; 4GB of memory; 35.5GB available storage on macOS Sierra or later* Some features require an Apple ID; terms apply.