It's almost impossible to find documentation on this and it's hidden deep inside Apple support doc, not even in English -__-
Transfer files between a Mac with Apple silicon and another Mac
You can connect a Mac with Apple silicon to another Mac so that the Mac with Apple silicon appears as an external hard disk. You can then transfer files between the Mac computers.
https://support.apple.com/lt-lt/guide/mac-help/mchlb37e8ca7/mac
- Connect the two computers using a USB, USB-C, or Thunderbolt cable.
- On the Mac with Apple silicon, choose Apple menu > Shut Down.
- Press and hold the power button until “Loading startup options” appears.
- Click Options, then click Continue.
- If requested, enter the password for an administrator account.
- Your Mac opens in Recovery mode.
- Choose Utilities > Share Disk.
- Select the disk or volume that you want to share, then click Start Sharing.
- On the other Mac, open a Finder window, then click Network (below Locations) in the sidebar.
- In the Network window, double-click the Mac that has the shared disk or volume, click Connect As, select Guest in the Connect As window, then click Connect.
- Transfer the files.
- When you’re done transferring files, eject the disk on the other Mac.
Note I do not recommend copying files by drag-and-drop, it's very SLOW. Use rsync
instead