How install original OS that came with Mac?

Here are the steps Apple describes:

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.

How do I wipe my Mac and reinstall original OS?

Restart your Mac. Choose Apple menu > Shut Down, press and hold the power button until “Loading startup options” appears, select Options, click Continue, then follow the onscreen instructions. In the Recovery app window, select Reinstall for your macOS release, click Continue, then follow the onscreen instructions.

How do I switch back to Mac from Windows to Mac?

After installing Microsoft Windows on your Mac, you can choose whether your Mac starts up in macOS or Windows….Restart your Mac in macOS or Windows

1. From the notification area on the right side of the Windows taskbar, click. to show hidden icons.
2. Click the Boot Camp icon .
3. From the menu shown, choose Restart in macOS.

Can I install an older OS on my Mac?

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.

Can I download macOS without installing it?

1. Yes, you can. 2. The installer will open once the download is complete, but won’t start the installation until told to.

Does reinstalling OS delete everything Mac?

Reinstalling Mac OSX by booting into the Rescue drive partition (hold Cmd-R at boot) and selecting “Reinstall Mac OS” does not delete anything. It overwrites all system files in-place, but retains all your files and most preferences.

Is it easy to transfer from Windows to Mac?

Apple makes it easy with a free utility called Windows Migration Assistant. Here’s how to transfer data from PC to Mac using the Windows Migration Assistant from Apple.