How do I reinstall IOS on my MacBook?
Reinstall macOS
- Install the latest version of macOS compatible with your computer: Press and hold Option-Command-R.
- Reinstall your computer’s original version of macOS (including available updates): Press and hold Shift-Option-Command-R.
How do I wipe my Mac and reinstall OS?
Select your startup disk on the left, then click Erase. Click the Format pop-up menu (APFS should be selected), enter a name, then click Erase. After the disk is erased, choose Disk Utility > Quit Disk Utility. In the Recovery app window, select “Reinstall macOS,” click Continue, then follow the onscreen instructions.
How do I revert to previous IOS on Mac?
Here’s how to recover the earlier version of the Mac OS using Time Machine:
- Plug your Time Machine disk into your Mac.
- Restart your Mac.
- Hold down Command + R until the Apple logo appears.
- When the options appear on screen, choose ‘Restore From Time Machine Backup’ and click Continue.
16 нояб. 2020 г.
How do I restore my MacBook?
How to Factory Reset: MacBook
- Restart your computer: hold the power button > select Restart when it appears.
- While the computer restarts, hold down the ‘Command’ and ‘R’ keys.
- Once you see the Apple logo appear, release the ‘Command and R keys’
- When you see a Recovery Mode menu, select Disk Utility.
1 февр. 2021 г.
How do I restore factory settings on my MacBook air?
How to reset a MacBook Air or MacBook Pro
- Hold down the Command and R keys on the keyboard and turn on the Mac. …
- Select your language and continue.
- Choose Disk Utility and click continue.
- Choose your startup disk (named Macintosh HD by default) from the sidebar and click the Erase button.
Why is my macOS not installing?
In some cases, macOS will fail to install because it doesn’t have enough room on your hard drive to do so. … Find the macOS Installer in your Finder’s Downloads folder, drag it to the Trash, then download it again and retry. You may need to force restart your Mac by holding down the Power button until it shuts down.
Does reinstalling Mac delete everything?
Reinstalling Mac OSX by booting into the Rescue drive partition (hold Cmd-R at boot) and selecting “Reinstall Mac OS” does not delete anything. It overwrites all system files in-place, but retains all your files and most preferences.
Is my Mac too old to update?
Apple said that would run happily on a late 2009 or later MacBook or iMac, or a 2010 or later MacBook Air, MacBook Pro, Mac mini or Mac Pro. If you Mac is supported read: How to update to Big Sur. This means that if your Mac is older than 2012 it won’t officially be able to run Catalina or Mojave.
How do I downgrade from OSX Catalina to Mojave or earlier?
- Step 1: Back up your Mac. …
- Step 2: Enable external media booting. …
- Step 3: Download MacOS Mojave. …
- Step 4: Prepare your drive. …
- Step 5: Wipe your Mac’s drive. …
- Step 6: Install Mojave. …
- Alternative: Use Time Machine.
3 мар. 2021 г.
Does Time Machine restore Mac OS?
If you made a Time Machine backup of your Mac, Migration Assistant can use that backup to restore your personal files, including apps and everything in your user account. If you prefer to restore just a few files or earlier versions of those files, learn how to use Time Machine to restore specific files.
How do I reset my MacBook Pro 2020?
Shut down your Mac, then turn it on and immediately press and hold these four keys together: Option, Command, P, and R. Release the keys after about 20 seconds.
How do I factory reset my MacBook pro Catalina 2020?
As above, start up in Recovery.
- Select Disk Utility from the options, and click Continue.
- Click on your main hard drive, typically called Macintosh HD, in the sidebar on the left. …
- To wipe your hard drive, click the Erase button, then click Erase.
27 янв. 2021 г.