Target Disk Mode is a powerful feature available on Macs that allows one Mac to act as an external hard drive for another Mac. This capability is particularly useful for transferring large files, performing data migrations, or troubleshooting issues on a Mac. When in Target Disk Mode, the target Mac’s storage becomes accessible as an external drive on the host Mac, enabling high-speed data transfers through a direct connection.

To use Target Disk Mode, ensure both Macs are equipped with compatible ports (USB, USB-C, or Thunderbolt). Restart the source Mac while holding down the T key, then connect it to the destination Mac using an appropriate cable. The source Mac will appear as an external drive in the Finder on the destination Mac, allowing for straightforward file transfers. This method is highly efficient and reliable, making it an excellent choice for large volume data transfers or when dealing with software compatibility issues.