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How do I reinstall Mac Sierra?
You can reinstall macOS Sierra or macOS High Sierra by doing the following:
- Back up the Mac before beginning.
- Reboot the Mac and hold down COMMAND + R keys concurrently right after you hear the boot sound, this will boot the Mac into Recovery Mode.
- At the “macOS Utilities” screen choose “Reinstall macOS”
Is Ubuntu a free software?
Open source Ubuntu has always been free to download, use and share. We believe in the power of open source software; Ubuntu could not exist without its worldwide community of voluntary developers.
How do I erase and reinstall macOS Big Sur?
Type a name for the volume in the Name field, click the Format pop-up menu and choose APFS, then click Erase Volume Group. When the erase process is complete, click Done, then choose Disk Utility > Quit Disk Utility. In the Recovery app window, select “Reinstall macOS Big Sur,” click Continue, then follow the onscreen instructions.
What do I need to do to reinstall Mac OS?
If you’re reinstalling on a Mac notebook computer, plug in the power adapter. Start up your computer in macOS Recovery: On a Mac with Apple silicon: Choose Apple menu > Shut Down, press and hold the power button until you see “Loading startup options,” select Options, click Continue, then follow the onscreen instructions.
How can I restore my Mac to factory settings?
You can restore your Mac to factory settings by erasing your Mac, then using macOS Recovery, the built-in recovery system on your Mac, to reinstall macOS. Important: Erasing the disk removes all the information from it. Before you start, back up your essential files and information to an external device.
Do you need to erase disk before installing macOS?
If you need to erase your disk before installing macOS, select Disk Utility from the Utilities window, then click Continue. You probably don’t need to erase, unless you’re selling or giving away your Mac or have an issue that requires you to erase.