Mac User Guide
- Welcome
- What’s new in macOS Sequoia
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- Get started with Apple Intelligence
- Use Writing Tools
- Use Apple Intelligence in Mail
- Use Apple Intelligence in Messages
- Use Apple Intelligence with Siri
- Get web page summaries
- Summarise an audio recording
- Use Apple Intelligence in Photos
- Summarise notifications and reduce interruptions
- Apple Intelligence and privacy
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- 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
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- 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
- Keep your Apple Account secure
- Use Mail Privacy Protection
- Use Sign in with Apple for apps and websites
- Find a missing device
- Resources for your Mac
- Resources for your Apple devices
- Copyright
Transfer files between two Mac computers using target disk mode
If you have two Mac computers with USB, USB-C or Thunderbolt ports, you can connect them so that one of them appears as an external hard disk on the other. This is called target disk mode.
Note: If either of the computers has macOS 11 or later installed, you must connect the two computers using a Thunderbolt cable.
If you have a Mac with Apple silicon, see Transfer files between a Mac with Apple silicon and another Mac.
Connect the two computers with a USB, USB-C or Thunderbolt cable.
On the Mac you want to use as the external disk in target disk mode, do one of the following:
If the computer is off, start it up while pressing and holding the T key.
If the computer is on, choose Apple menu
in the sidebar (you may need to scroll down). Click Startup Disk on the right, then click Restart in Target Disk Mode.Open Startup Disk settings for me
When the computer has started up, a disk icon appears on the desktop of the other computer.
On the other Mac, open a Finder window, then double-click the Mac you’re using as an external disk in the sidebar.
Transfer files by dragging them to and from the disk.
To eject the disk, Control-click it in the Finder sidebar, then choose Eject [volume].
On the Mac you used as a disk, push the power button to shut it down, then disconnect the cable.
