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.
Can you reinstall macOS without losing data?
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.
What happens if I reinstall macOS?
This installs the system that came with your Mac when it was new. It isn’t associated with your Apple ID, so the new owner can use the App Store to upgrade to a later version using their Apple ID.
Does reinstalling macOS keep files?
You can use macOS Recovery, the built-in recovery system on your Mac, to reinstall macOS. macOS Recovery keeps your files and user settings intact when reinstalling. Important: Your computer must be connected to the internet to reinstall macOS.
Does reinstalling software delete everything?
Although you’ll keep all of your files and software, the reinstallation will delete certain items such as custom fonts, system icons and Wi-Fi credentials. However, as part of the process, the setup will also create a Windows. old folder which should have everything from your previous installation.
How do I reset my Mac without losing everything?
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 can I repair my Mac without losing data?
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.
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.
How do I wipe and reinstall my Mac?
Erase and reinstall macOS
- 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.
Where is macOS recovery stored?
This recovery system is stored on a hidden partition on your Mac’s hard drive — but what if something happens to your hard drive? Well, if your Mac can’t find the recovery partition but it’s connected to the Internet via either Wi-Fi or a network cable, it’ll start the OS X Internet Recovery Feature.
How do I reinstall OSX without Internet?
Just connect the USB disk and press the Option/Alt Key when you hear the boot sound. The Mac will then display all the startup disks available. Pick the USB drive starting with the label “Install macOS” and follow on-screen instructions to complete the installation.