- Boot imac operating system how to#
- Boot imac operating system install#
- Boot imac operating system password#
- Boot imac operating system download#
Paste the following commands depending on the MacOS operating system you have chosen (only one of the four commands depending on the Apple operating system you have chosen):.Open the Terminal app, located in the Applications>Utilities folder.Mount the USB flash drive and with the Mac Disk Utility and format it HFS+ (GUID partition).The installer will be in the Applications folder. Close the installer if it opens automatically once downloaded.
Boot imac operating system download#
Download the latest macOS installer (Sierra or Mojave) from the Mac App Store. Boot imac operating system install#
How to create an executable USB with MacOSĪpple has finally made things easy for us and we don’t have to do very complicated things to create an executable USB disk that allows us to install MacOS from scratch. Since we want to improve the performance of our computer: it is best to perform a completely clean installation and then copy only the data and programs that interest us. Is it better to do this than recovering a copy of Time Machine? Yes. Start the Boot Manager, which allows you to choose other disks or boot volumes if available. How to boot a Mac from a USB with the Option (⌥) key? The first thing to do before changing the hard disk or before installing the new OS is to prepare a USB stick with MacOS to reinstall the operating system on our Macbook.
Boot imac operating system how to#
Use a USB flash drive or other secondary volume to create a bootable installer.Do you know how to boot a Mac from a USB? Do you have an iMac or a Macbook Pro already with a few years under its belt and want to give it new life by installing a new solid hard drive SSD? Do you want to install Apple’s operating system from scratch on your Mac?. Use the App Store to download and install the latest macOS or an earlier macOS. You can also use these methods to install macOS, if the macOS is compatible with your Mac: If you just erased your entire startup disk, you might be offered only the macOS that came with your Mac, or the closest version still available. If the Mac logic board was just replaced, you might be offered only the latest macOS that is compatible with your Mac. Or you can use Option-Command-R during startup to be offered either the latest macOS that is compatible with your Mac, or in some cases the macOS that came with your Mac or the closest version still available. On an Intel-based Mac, you can use Shift-Option-Command-R during startup to be offered the macOS that came with your Mac, or the closest version still available. When you install macOS from Recovery, you get the current version of the most recently installed macOS, with some exceptions: When the new owner starts up the Mac, they can use their own information to complete setup. If you're selling, trading in, or giving away your Mac, press Command-Q to quit the assistant without completing setup. Your Mac might restart and show a progress bar several times, and the screen might be empty for minutes at a time.Īfter installation is complete, your Mac might restart to a setup assistant. Allow installation to complete without putting your Mac to sleep or closing its lid. If the installer offers you the choice between installing on Macintosh HD or Macintosh HD - Data, choose Macintosh HD. If the installer doesn't see your disk, or it says that it can't install on your computer or volume, you might need to erase your disk first. Boot imac operating system password#
If the installer asks to unlock your disk, enter the password you use to log in to your Mac.To begin installation, select Reinstall macOS from the utilities window in macOS Recovery, then click Continue and follow the onscreen instructions.įollow these guidelines during installation: Reinstalling macOS does not remove data from your Mac.
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