2 Answers. Reinstalling macOS from the recovery menu does not erase your data. However, if there is a corruption issue, your data may be corrupted as well, its really hard to tell. … Reinatalling the os alone does not erase data.
What happens if you reinstall macOS?
2 Answers. It does exactly what it says it does–reinstalls macOS itself. It only touches operating system files that are there in a default configuration, so any preference files, documents and applications that are either changed or not there in the default installer are simply left alone.
Will I lose photos if I reinstall macOS?
The good news is that, if you follow the instructions strictly to update your Mac Operating System, the chance to lose data on your Mac is quite slim, since a reinstallation just needs to create a new copy of the OS, your existing files stored on your Mac won’t be lost.
Can you reinstall macOS without losing bootcamp?
Answer: A: Answer: A: Well there are three ways to go about it. 1: Simply reinstall OS X on top of the installed version and Software Updating until clear, this method keeps your files and most third party programs intact, unless those third party programs have “hooks” into OS X, which will get kicked out.
Will reinstalling macOS fix problems?
However, reinstalling OS X isn’t a universal balm that fixes all hardware and software errors. If your iMac has contracted a virus, or a system file that was installed by an application “goes rogue” from data corruption, reinstalling OS X likely won’t solve the problem, and you’ll be back to square one.
How long does macOS reinstall take?
Depends on what kind of Mac you have and method of install. Typically, if you have a stock 5400 rpm drive, it takes about 30 – 45 minutes using a USB installer. If you are using the internet recovery route, it can take over an hour, depending on speed of internet etc.
Why does it take so long to reinstall macOS?
Since the main reason for slow OS X installs is the use of relatively slower installation media, if you are planning on installing OS X multiple times then you might benefit from using faster media.
How can I repair my Mac without losing data?
In this guide, we will teach you how to boot Mac into recovery mode and reinstall macOS without losing your data.
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How to Reinstall Mac OS?
- Step 1: Backup Files on Mac. …
- Step 2: Boot Mac in the Recovery Mode. …
- Step 3: Erase the Mac Hard Disk. …
- Step 4: Reinstall Mac OS X without Losing Data.
How do I clean and reinstall my Mac?
If you’re reinstalling on a Mac notebook computer, plug in the power adapter.
- Start up your computer in macOS Recovery: …
- In the Recovery app window, select Disk Utility, then click Continue.
- In Disk Utility, select the volume you want to erase in the sidebar, then click Erase in the toolbar.
How do I repair a Mac installation?
Repairing a disk
- Restart your Mac, and press Command + R, while it’s restarting.
- Select Disk Utility from the macOS Utilities menu. Once Disk Utility has loaded, choose the disk you wish to repair – the default name for your system partition is generally “Macintosh HD”, and choose ‘Repair Disk’.
How do I restore my Mac without losing windows?
Step 1: Hold the Command + R keys until the MacBook’s utility window hasn’t opened. Step 2: Select Disk Utility and click on Continue. Step 4: Select the format as MAC OS Extended (Journaled) and click on Erase. Step 5: Wait till the MacBook is completely reset and then go back to the Disk Utility’s main window.
How do I reinstall OSX on bootcamp?
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.