Reinstall from macOS Recovery
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macOS Recovery makes it easy to reinstall the Mac operating system, even if you need to erase your startup disk first. All you need is a connection to the Internet. If a wireless network is available, you can choose it from the Wi-Fi menu , which is also available in macOS Recovery.
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1. Start up from macOS Recovery
To start up from macOS Recovery, turn on your Mac and immediately press and hold one of the following sets of keys on your keyboard. Release the keys when you see an Apple logo, spinning globe, or other startup screen.
Command (⌘)-R
Reinstall the latest macOS that was installed on your Mac (recommended).
Option-⌘-R
Upgrade to the latest macOS that is compatible with your Mac.
Shift-Option-⌘-R
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Reinstall the macOS that came with your Mac, or the closest version still available.
You might be prompted to enter a password, such as a firmware password or the password of a user who is an administrator of this Mac. Enter the requested password to continue.
When you see the utilities window, you have started up from macOS Recovery.
2. Decide whether to erase (format) your disk
You probably don't need to erase, unless you're selling, trading in, or giving away your Mac, or you have an issue that requires you to erase. If you need to erase before installing macOS, select Disk Utility from the Utilities window, then click Continue. Learn more about when and how to erase.
3. Install macOS
When you're ready to reinstall macOS, choose Reinstall macOS from the Utilities window. Then click Continue and follow the onscreen instructions. You will be asked to choose a disk on which to install.
- If the installer asks to unlock your disk, enter the password you use to log in to your Mac.
- 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.
- If the installer is for a different version of macOS than you expected, learn about macOS Recovery exceptions.
- If the installer offers you the choice between installing on Macintosh HD or Macintosh HD - Data, choose Macintosh HD.
Please allow installation to complete without putting your Mac to sleep or closing its lid. During installation, your Mac might restart and show a progress bar several times, and the screen might be empty for minutes at a time.
If your Mac restarts to a setup assistant, but you're selling, trading in, or giving away your Mac, press Command-Q to quit the assistant without completing setup. Then click Shut Down. When the new owner starts up the Mac, they can use their own information to complete setup.
macOS Recovery exceptions
The version of macOS offered by macOS Recovery might vary in some cases:
- If macOS Sierra 10.12.4 or later has never been installed on this Mac, Option-Command-R installs the macOS that came with your Mac, or the closest version still available. And Shift-Option-Command-R isn't available.
- If you erased your entire disk instead of just the startup volume on that disk, macOS Recovery might offer only the macOS that came with your Mac, or the closest version still available. You can upgrade to a later version afterward.
- If your Mac has the Apple T2 Security Chip and you never installed a macOS update, Option-Command-R installs the latest macOS that was installed on your Mac.
- If you just had your Mac logic board replaced during a repair, macOS Recovery might offer only the latest macOS that is compatible with your Mac.
If you can't get macOS Recovery to offer the installer you want, you might be able to use one of the other ways to install macOS.
Other ways to install macOS
- You can also install macOS from the App Store or Software Update preferences. If you can't install macOS Catalina, you might be able to install an earlier macOS, such as macOS Mojave, High Sierra, Sierra, El Capitan, or Yosemite.
- Or create a bootable installer disk, then use that disk to install macOS on your Mac or another Mac.
Learn to Play lessons are great way to to enhance your ability to make music and are available exclusively through GarageBand, which is included in Apple’s iLife software suite of applications. GarageBand allows you to create and record music, make podcasts, and play with your own virtual band! Learn more about iLife and GarageBand.
Playing Learn to Play Lessons
To play a Basic Lesson or purchased Artist Lesson:
- Launch GarageBand, and navigate to the Learn to Play area.
- You can play the free and purchased content you’ve downloaded.
- To preview new content or make new purchases, go to the Lesson Store.
Previewing Learn to Play Lessons
You can preview Basic Lessons before you download them and Artist Lessons before you purchase them.
- Launch GarageBand, and click on the Lesson Store tab.
- Click either the Basic Lessons or Artist Lessons tab in the main area of the window.
- To preview lessons, click anywhere in the rectangle (except the “Buy Now” button).
- The preview starts playing.
Purchasing and Downloading Artists Lessons
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When you purchase Artist Lessons, you receive your content instantly! Once you’re in the Lesson Store and you find the Artist Lesson you like, simply click the Buy Now button. Thermal printer app for mac computer. You’ll be asked to sign-in with your Apple ID and password.
Note: If you don’t have an Apple ID, click the “create an Apple ID” link and follow the instructions. Refer to the Your Account section of Online Help to learn more about the benefits of an Apple ID, or to find/reset your Apple ID or password.
- Create or Use Your Apple ID
- Enter your payment information, and click the “Buy Now” button.
- The Learn to Play area launches, where you can see your lesson being downloaded.
- Once your lesson is downloaded, click Play to enjoy!
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Retrieving Downloaded Artist Lessons
If your Artist Lesson does not automatically begin downloading, you quit GarageBand before your lesson finished downloading, or you do not see your purchased lessons in GarageBand, there are a few ways to retrieve your content:
- Re-open GarageBand and your content will resume downloading where it left off.
- View and re-download your Artist Lesson purchases by visiting the Order History section of Your Account.
Problems with Artist Lessons
If you’re having trouble purchasing, downloading, or retrieving Artist Lessons, please contact Apple Store Customer Service at 1-800-676-2775.
If you’re having trouble previewing or playing Artist Lessons you’ve purchased, or have questions about system requirements, please contact AppleCare Technical Support at 1-800-275-2273.
Please read the product information for Electronic Software Downloads and Apple’s Sales and Refund Policy carefully, as software download purchases are non-refundable.
System Requirements for Learn to Play lessons
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https://skieygive329.weebly.com/xiaozhan-toefl-app-for-mac-independent-writing-time.html. Double check to ensure you have the right system requirements to download and play Learn to Play lessons. Refer to apple.com/ilife for more information.