How to install os on macbook pro?

1. Open the Mac App Store (choose Store > Sign In if you need to log in).
2. Click Purchased.
3. Scroll down to find the copy of OS X or macOS you want.
4. Click Install.

Quick Answer, how do you install the OS that came with your Mac?

1. Start up your Mac pressing Shift-Option/Alt-Command-R.
2. Once you see the macOS Utilities screen choose the Reinstall macOS option.
3. Click Continue and follow the on-screen instructions.
4. Select your startup disk and click Install.
5. Your Mac will restart once the installation is complete.

Correspondingly, how do I do a clean install of OSX?

1. Step 1: Format the external drive.
2. Step 2a: Get the macOS install file.
3. Step 2b: Get the install file for an older version of macOS.
4. Step 3: Create a bootable USB disk.
5. Step 4: Wipe your Mac.

Also know, how do you make sure your Mac is backed up? Make sure your Mac Pro is on the same Wi-Fi network as your external storage device, or connect the storage device to your Mac Pro. Open System Preferences, click Time Machine, then select Back Up Automatically. Select the drive you want to use for backup, and you’re all set.

Frequent question, how do I download OSX without App Store?

1. Head over to the dosdude1 website and click on “Download Latest Version” to begin downloading the macOS Catalina Patcher on to your system.
2. This will open up a new window.
3. Click on “Continue” to begin with the macOS Catalina installation procedure.

Can I install an older version of macOS?

Check compatibility. The version of macOS that came with your Mac is the earliest version it can use. For example, if your Mac came with macOS Big Sur, it will not accept installation of macOS Catalina or earlier. If a macOS can’t be used on your Mac, the App Store or installer will let you know.

Does reinstalling macOS lose data?

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 install macOS from USB?

Use an external drive or USB to install a fresh copy of macOS. Using an external drive, you can install or reinstall the Mac operating system on a supported device. Apple recommends only system administrators follow these steps since a bootable installer isn’t necessary to update or even reinstall macOS.

How do I reinstall Mac OS after wipe?

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 happens if I reinstall Mac OS?

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.

What do I do if I can’t reinstall OSX?

First, completely shut down your Mac via the Apple Toolbar. Then, hold down Command, Option, P, and R buttons on your keyboard as you restart your Mac. Continue to keep these buttons held until you hear the Mac startup chime twice. After the second chime, let go of the buttons and let your Mac restart as normal.

How long should a Mac backup take?

Preparing backup shouldn’t take more than 5 or 10 minutes if your Mac is new and you barely have anything on it.

How do I backup my MacBook Pro without Time Machine?

You can manually back up Mac data to an external hard drive without Time Machine. Just plug in the external hard drive to your Mac to get started and back up your data. Click Finder> Preferences and examine the Hard Disks in Show these items on the desktop.

How do I restore factory settings on my MacBook air?

1. Hold down the Command and R keys on the keyboard and turn on the Mac.
2. Select your language and continue.
3. Choose Disk Utility and click Continue.
4. Choose your startup disk (named Macintosh HD by default) from the sidebar and click the Erase button.

How do I download the full version of OSX Catalina?

Launch the Mac App Store on Catalina, and then download macOS Catalina. It should drop into your /Applications folder, where you can reference it from the USB creation documentation. Cancel any attempts by the download to run the installer.

Is macOS Catalina still available for download?

Apple has now officially released the final version of macOS Catalina, which means that anyone with a compatible Mac or MacBook can now safely install it on their device. As with previous versions of macOS, macOS Catalina is a free update which brings a number of cool new features.