Devices with Apple Silicon replaced the tried and true Target Disk Mode with the less helpful, but still better than nothing Share Disk Mode.

To access Share Disk Mode, you’ll need to get the Mac into Recovery Mode. With your Mac off, press and hold the power button until you see “Loading Startup Options” on screen.

Select “Options” on the startup menu screen.

If prompted, enter the password for an Administrator account.

Now you’re in Recovery Mode!