If your Mac has a firmware password and you want to boot into Target Disk Mode you can’t just hold down T while the computer boots. It won’t prompt for a password or anything. To get around this I’ve been booting into systems, removing the firmware password, then booting into target disk mode.
Well there is a much simpler way to do this.
- Hold
Optionwhile computer is booting.- Enter firmware password when prompted.
- When you see the local hard drive listed hit
T.- Congrats, you are now in target disk mode.