Welcome
- MacBook Air
- MacBook Pro
- iMac
- Mac mini
- Mac Studio
- Mac Pro
What’s new in macOS Tahoe
- Work on the desktop
- What’s in the menu bar?
- Quickly change settings
- What’s in the Apple menu?
- Search with Spotlight
- How to use Siri
- Get notifications
- Open apps from the Dock
- Organize your files in the Finder
- Connect to the internet
- Sign in to your Apple Account
- Set up iCloud
- Browse the web
- Preview a file
- Take a screenshot
- Change your display’s brightness
- Adjust the volume
- Use trackpad and mouse gestures
- Use Touch ID
- Print documents
- Keyboard shortcuts
- Apps on your Mac
- Open apps
- Work with app windows
- Tile app windows
- Use apps in full screen
- Use apps in Split View
- Use Stage Manager
- Get apps from the App Store
- Install and reinstall apps from the App Store
- Install and uninstall other apps
- Create and work with documents
- Open documents
- Mark up files
- Combine files into a PDF
- Organize files on your desktop
- Organize files with folders
- Tag files and folders
- Back up files
- Restore files
- Change System Settings
- Choose your desktop picture
- Add and customize widgets
- Use a screen saver
- Add a user or group
- Add your email and other accounts
- Automate tasks with Shortcuts
- Create Memoji
- Change your login picture
- Change the system language
- Increase the size of what’s on your screen
- Turn on and activate Siri
- Customize Siri
- Intro to Apple Intelligence
- Translate messages and calls
- Create original images with Image Playground
- Create your own emoji with Genmoji
- Use Apple Intelligence with Siri
- Find the right words with Writing Tools
- Summarize notifications and reduce interruptions
- Use ChatGPT with Apple Intelligence
- Apple Intelligence and privacy
- Block access to Apple Intelligence features
- Set up a Focus to stay on task
- Block pop-ups in Safari
- Use Dictation
- Perform quick actions with hot corners
- Send emails
- Send text messages
- Make a FaceTime call
- Edit photos and videos
- Use Live Text to interact with text in a photo
- Start a Quick Note
- Get directions
- Intro to Continuity
- Use AirDrop to send items to nearby devices
- Hand off tasks between devices
- Control your iPhone from your Mac
- Copy and paste between devices
- Stream video and audio with AirPlay
- Make and receive calls and text messages on your Mac
- Use your iPhone internet connection with your Mac
- Share your Wi-Fi password with another device
- Use iPhone as a webcam
- Insert sketches, photos, and scans from iPhone or iPad
- Unlock your Mac with Apple Watch
- Use your iPad as a second display
- Use one keyboard and mouse to control Mac and iPad
- Sync music, books, and more between devices
- Manage Apple Account settings
- Set your Apple Account picture
- What is iCloud?
- What is iCloud+?
- Store files in iCloud Drive
- Share and collaborate on files and folders
- Manage iCloud storage
- Use iCloud Photos
- Get started with Screen Time
- Set up Screen Time for yourself
- Set up Screen Time for a child
- Track app and device usage
- Set time limits for apps and websites
- Set up content and privacy restrictions
- Set up Family Sharing
- Get Family Sharing recommendations
- Add family members to a Family Sharing group
- Remove family members from a Family Sharing group
- Manage sharing and parental settings
- Share a Photo Library
- Collaborate on projects
- Find content shared with you
- Find your family and friends
- Play music
- Watch and listen together with SharePlay
- Listen to podcasts
- Watch TV shows and movies
- Read and listen to books
- Read the news
- Write in your journal
- Track stocks and the market
- Play games on your Mac
- Connect an external display
- Use the camera
- Connect a wireless accessory
- Connect a printer to your Mac
- Connect AirPods to your Mac
- Optimize your Mac battery life
- Optimize storage space
- Burn CDs and DVDs
- Control accessories in your home
- Run Windows on your Mac
- Get started
- Control what you share
- Set up your Mac to be secure
- Allow apps to see the location of your Mac
- Use Private Browsing
- Keep your data safe
- Understand passwords
- Change weak or compromised passwords
- Use Mail Privacy Protection
- Use Sign in with Apple for apps and websites
- Find a missing device
- Shut down or restart your Mac
- Start up your Mac in safe mode
- Keep your Mac up to date
- Reinstall macOS
- Erase your Mac
Resources for your Mac
Resources for your Apple devices
Copyright and trademarks

Lock a document on Mac

To protect documents from being accidentally changed or deleted, you can lock them. When a document is locked, you receive a warning when you move it to the Trash. When you empty the Trash, the locked document is deleted.

On your Mac, do one of the following:

Lock a closed document: Select it in a Finder window or on the desktop, choose File > Get Info, click next to General, then select Locked.
Lock an open document: Hold the pointer to the right of the document title in the toolbar, click , then click .

To unlock a document, click .

To protect folders and disks, change permissions for them.

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Mac User Guide

Lock a document on Mac