HOW TO OPEN A MAC IN TARGET DISK MODE UPDATE
As you may know, with very few exceptions, Apple does not update older versions of OS X to support newer hardware. To accomplish this, first make sure that your “target” Mac (the one you’ll configure for Target Disk Mode) is running a version of OS X equal to or greater than the “host” Mac. In Ken’s situation, he would put the Mac mini into Target Disk Mode, attach it to his MacBook Pro using FireWire or Thunderbolt, and then boot the MacBook using the mini’s hard drive, producing the same basic result as if he had physically removed the mini’s drive and installed it in his MacBook. From a user perspective, the internal drives of a TDM-connected Mac appear indistinguishable from those of an external drive enclosure.īut an even more interesting aspect of TDM is that it allows a user to view another Mac’s hard drive as a potential boot drive, and to boot natively into OS X with a combination of one computer’s hardware and another computer’s software. If a Mac won’t boot, a user can connect it to a working Mac, initiate Target Disk Mode, and then, if the hard drive is still functioning, view the drive’s contents.
TDM is most often used to help diagnose malfunctioning Macs. TDM allows a user to connect two Macs using either FireWire or Thunderbolt, allowing one Mac to access the other’s internal drives as if they were external FireWire or Thunderbolt drives. The answer to your question arrives courtesy of a feature called Target Disk Mode (TDM), which Apple introduced way back in 1991 with the PowerBook 100.
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