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How do I reinstall OSX without losing Windows?
How to Update & Reinstall macOS Without Losing Data
- Start up your Mac from macOS Recovery.
- Select “Reinstall macOS” from the Utilities Window and click “Continue”.
- Follow the onscreen instructions to select the hard drive you want to install the OS on and start the installation.
How do I wipe my Mac without losing my OS?
In the Installer, choose Utilities > Disk Utility. Select your startup disk from the list on the left, and then click the Erase tab. From the Format pop-up menu, select Mac OS Extended (Journaled), type a name for your disk, and then click Erase.
How do I reset my Mac computer to factory settings?
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. This clears user settings from memory and restores certain security features that might have been altered.
Is there a way to erase the OSX partition?
When you install Windows, the boot camp support software will install automatically, when you set up your Windows user. Once you have that support software saved, then you can boot to your Windows installer, erase your internal storage, and use the entire drive for your Windows system.
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.
How do I reinstall OS X on my Mac?
While the system is restarting, press the Command and R keys at the same time till your Mac enters the Recovery mode. When you get the utility window on the screen, just click on the “Reinstall macOS” option and continue the process.
Do you need to delete data when reinstalling Mac OS?
This is an optional step during the reinstall macOS process as a lot of people would like to delete the existing data on their system. If you are reselling your Mac or your system has been infected by malware, then you can consider this option as well.