When you are finished, safely eject the target Mac as if it’s any other disk.

In a few moments, the Mac will bot as usual and the target Mac’s hard drive should appear on the host Mac’s desktop, allowing you to access it like any other external drive.

Boot the target Mac while holding down the ‘T’ key until you see a Firewire or Thunderbolt icon displayed on screen, this signifies that target disk mode is detected and working.

Now connect both Mac’s to each other with the Firewire or Thunderbolt cable.

Turn off the ‘target’ Mac (the one who’s drive you want to show up on the host).

How to Use Firewire or Thunderbolt Target Disk Mode on Mac A converter may work, but it is not recommended. Additionally, each Mac must use the same port, for example, if you’re booting target disk with Thunderbolt, both Macs must use thunderbolt to connect to one another. MacOS Recovery on Macs with ‌Apple Silicon‌ includes a number of other apps that can help you repair an internal disk, reinstall macOS, restore your files from a Time Machine backup, and more.Before beginning, be sure both Mac computers have Firewire or ThunderBolt ports, and that you have a Firewire or Thunderbolt cable.

When your files are transferred, eject the disk on the other Mac.

Select Guest in the Connect As window, then click Connect.

In the Network window, double-click the Mac that has the shared disk, then click Connect As.On the other Mac, open a Finder window and click Network in the sidebar under 'Locations.'.Select the disk you want to share with the other Mac, then click Start Sharing.When your Mac has entered Recovery mode, choose Utilities -> Share Disk from the menu bar.Enter the password for an administrator account if prompted. On the same Mac, press and hold the power button until you see a screen offering 'Loading startup options.'.If the ‌Apple Silicon‌ Mac is powered on, shut it down ( menu -> Shut Down).

Connect the two computers using a USB-C or Thunderbolt cable.Using the method described below will allow you to easily transfer your files across from an older Mac to a new ‌Apple Silicon‌ Mac. Mac Sharing Mode turns the system into an SMB file sharing server, providing another Mac with file-level access to user data. Sharing Mode on ‌Apple Silicon‌ Macs replaces the older Target Disk Mode found on Intel Macs, and can be used similarly to transfer data between two Macs. If you have a newer Apple Silicon Mac and an older Intel Mac lying around, you can connect the two using Sharing Mode, so that the older Mac appears as an external hard disk to your new machine.

Target disk mode thunderbolt 3