This document describes the security content of macOS Big Sur 11.2.1, macOS Catalina 10.15.7 Supplemental Update, and macOS Mojave 10.14.6 Security Update 2021-002.
- Old Toad, Thanks for the reply, they both show up in finder, I have attached images, and they have the exact same folders. I am running Catalina 10.15 - I erased the disk and installed the OS fresh and now time machine is reporting it can't back up the system because the Macintosh -HD volume is already present and needs to be renamed even though I formatted the backup disk.
- With macOS Catalina, your iTunes media library is now available in the Apple Music app, Apple TV app, Apple Books app, and Apple Podcasts app. And Finder is where you can manage and sync content on your iPhone, iPad, and iPod touch.
- MacOS Support Essentials 10.15 is a three-day course that teaches the best ways to support macOS Catalina users. The course includes lectures, demonstrations, group discussions, and hands-on exercises that provide real-world experience.
Now there's an app for every media type
With macOS Catalina, your music, videos, podcasts, and audiobooks are organized in to their own dedicated apps — the Apple Music app, Apple TV app, Apple Podcasts app, and Apple Books app. You can also access your iTunes Store purchases in these apps.
If you have a PC, you can continue to use iTunes for Windows to manage your media library, make purchases, and manually sync and manage your iPhone, iPad, or iPod touch.
Use Finder to sync and manage your iPhone, iPad, and iPod touch
Finder is the new place to back up, update, or restore your iPhone, iPad, and iPod touch. Just connect your device to your Mac and it appears in the Finder sidebar. And you can easily drag and drop files to your device.
Use Finder to manage your devices.
Upgrade your iTunes library
After you update to macOS Catalina, just open the Apple Music app or Apple TV app to use your iTunes library in the new apps. Have multiple iTunes libraries? Learn how to switch between them in macOS Catalina.
If you open the Apple Podcasts app or Apple Books app first, you won't see any of your media until you open the Apple Music app or Apple TV app.
Here are some things to know
- The Apple Music app and Apple TV app read the contents of your iTunes library — so don't delete your iTunes library.
- If you open the Apple Music app and don't see all of your album artwork, leave the Apple Music app open so your album artwork can finish downloading.
- If you previously used multiple iTunes libraries, your audiobooks are imported in to the Apple Books library and podcasts are imported in to the Apple Podcasts library on your computer.
Where's my media?
Here's where you can find your entire media collection, access your iTunes Store purchases, and synced libraries.
All of your music is now in the Apple Music app
The Apple Music app is where you can find all of your music, including music that you imported in to iTunes, purchased from the iTunes Store, and playlists and smart playlists that you created in iTunes. And if you subscribe to Apple Music, you can stream and download millions of songs, and access your entire music library across all of your devices.
Explore the Apple Music app.
Looking for the iTunes Store?
If you don't see the iTunes Store in the sidebar, here's how to find it:
- Open the Apple Music app.
- In the menu bar, choose Music > Preferences.
- Go to the General tab and select iTunes Store.
- Click OK.
Everything you watch is now in the Apple TV app
The Apple TV app is the new home for all of your movies, TV shows, and home videos — including your purchases from iTunes. Browse movies and TV shows that you can buy, rent movies, and subscribe to just the channels that you want to watch. And soon you can discover new favorites with Apple TV+.
Discover the Apple TV app.
Find podcasts in the Apple Podcasts app
Find all of the shows that you've subscribed to or added to iTunes in the Apple Podcasts app. Continue listening to your favorite podcast episodes. And discover new shows that you might like based on the ones that you're already listening to.
Listen with the Apple Podcasts app.
Listen to audiobooks in the Apple Books app
Apple Catalina Operating System
Find your audiobooks, including the ones that you purchased from iTunes, in the Apple Books app. Discover new books to read in the Book Store. Or buy audiobooks from the new Audiobook Store so you can listen on the go.
Check out the Apple Books app.
Apple Catalina Download
Apple Catalina
The Apple Music app, Apple TV app, Apple Podcast app, and Apple Books app aren't available in all countries and regions. Learn what's available in your country or region.
Installation and Configuration
Participants learn to update, upgrade, and reinstall macOS Catalina, then set up and configure macOS on an individual Mac. Participants are introduced to the command-line interface and macOS Recovery.
User Accounts
Participants learn to manage user accounts and user home folders. They also learn about macOS security and password management.
Apple Catalina
File Systems and Storage
Participants learn to manage file systems, storage, encryption, permissions, and file sharing.
Data Management
Participants use hidden items, shortcuts, file archives, metadata, and Spotlight. They also learn to manage system resources and Time Machine.
Apps and Processes
Participants install, manage, and troubleshoot apps, and manage documents.
Upgrade your iTunes library
After you update to macOS Catalina, just open the Apple Music app or Apple TV app to use your iTunes library in the new apps. Have multiple iTunes libraries? Learn how to switch between them in macOS Catalina.
If you open the Apple Podcasts app or Apple Books app first, you won't see any of your media until you open the Apple Music app or Apple TV app.
Here are some things to know
- The Apple Music app and Apple TV app read the contents of your iTunes library — so don't delete your iTunes library.
- If you open the Apple Music app and don't see all of your album artwork, leave the Apple Music app open so your album artwork can finish downloading.
- If you previously used multiple iTunes libraries, your audiobooks are imported in to the Apple Books library and podcasts are imported in to the Apple Podcasts library on your computer.
Where's my media?
Here's where you can find your entire media collection, access your iTunes Store purchases, and synced libraries.
All of your music is now in the Apple Music app
The Apple Music app is where you can find all of your music, including music that you imported in to iTunes, purchased from the iTunes Store, and playlists and smart playlists that you created in iTunes. And if you subscribe to Apple Music, you can stream and download millions of songs, and access your entire music library across all of your devices.
Explore the Apple Music app.
Looking for the iTunes Store?
If you don't see the iTunes Store in the sidebar, here's how to find it:
- Open the Apple Music app.
- In the menu bar, choose Music > Preferences.
- Go to the General tab and select iTunes Store.
- Click OK.
Everything you watch is now in the Apple TV app
The Apple TV app is the new home for all of your movies, TV shows, and home videos — including your purchases from iTunes. Browse movies and TV shows that you can buy, rent movies, and subscribe to just the channels that you want to watch. And soon you can discover new favorites with Apple TV+.
Discover the Apple TV app.
Find podcasts in the Apple Podcasts app
Find all of the shows that you've subscribed to or added to iTunes in the Apple Podcasts app. Continue listening to your favorite podcast episodes. And discover new shows that you might like based on the ones that you're already listening to.
Listen with the Apple Podcasts app.
Listen to audiobooks in the Apple Books app
Apple Catalina Operating System
Find your audiobooks, including the ones that you purchased from iTunes, in the Apple Books app. Discover new books to read in the Book Store. Or buy audiobooks from the new Audiobook Store so you can listen on the go.
Check out the Apple Books app.
Apple Catalina Download
Apple Catalina
The Apple Music app, Apple TV app, Apple Podcast app, and Apple Books app aren't available in all countries and regions. Learn what's available in your country or region.
Installation and Configuration
Participants learn to update, upgrade, and reinstall macOS Catalina, then set up and configure macOS on an individual Mac. Participants are introduced to the command-line interface and macOS Recovery.
User Accounts
Participants learn to manage user accounts and user home folders. They also learn about macOS security and password management.
Apple Catalina
File Systems and Storage
Participants learn to manage file systems, storage, encryption, permissions, and file sharing.
Data Management
Participants use hidden items, shortcuts, file archives, metadata, and Spotlight. They also learn to manage system resources and Time Machine.
Apps and Processes
Participants install, manage, and troubleshoot apps, and manage documents.
Network Configuration
Participants manage basic and advanced network settings and troubleshoot network issues.
Apple Catalina Date
Network Services
Participants manage network services, host sharing, and a personal firewall.
Apple Catalina Installer
System Management
Participants manage printers and scanners, then troubleshoot peripherals, startup, and other system issues.
