But not all adapters are known to work correctly in Target Disk Mode, so if you can, connect directly to the same port type. For example, if you begin playing music on your iMac and then enter target display mode, the music doesnt pause on your iMac. Apps that were open on your iMac when entering target display mode remain open in target display mode. Or disconnect the cable, or restart either Mac. Using adapters to connect Thunderbolt to FireWire will usually work, as will Thunderbolt to USB-C. To exit target display mode, press Command-F2 again. Ideally, you should connect similar ports that is FireWire to FireWire, Thunderbolt to Thunderbolt, or USB-C to USB-C. Using Target Disk Mode on this MacBook requires a cable that supports USB 3.0 or USB 3.1, with either a USB-A or USB-C connector on one end and a USB-C. If I remember correctly, the first option produced an image. An appropriate cable to make the connection. Boot the target device into Target Disk Mode connect it to the analysis Mac take an image with dd (run from the analysis Mac).

We recommend shutting down both Macs before proceeding, however. On the Mac you want to use as the external drive, go to System Preferences > Startup Disk, and click the Target Disk Mode button at the bottom. Using Target Disk Mode on this MacBook requires a cable that supports USB. All of the connection types (FireWire, Thunderbolt, and USB-C) support hot connecting, meaning you can connect a cable between the two Macs while they are powered on. Target Disk Mode (sometimes referred to as TDM or Target Mode) is a boot mode. That may seem obvious, but it makes sense to point out that Target Disk Mode only works between two Macs you can’t chain multiple Macs together. I can't find a specific Apple KB reference, but the consensus seems to be that you need Firewire, Thunderbolt or USB-C USB 2 doesn't appear to be supported.įrom the MacSales blog - Mac OS 101: How to Boot and Use a Mac in Target Disk Mode Answer (1 of 2): Q: In trying to recover files by using target disk mode on Mac after a failed Big Sur update due to lack of Mac HD space, and only accessing the OS again through use of having installed it to external drive, what can you do without a separate Mac/PC A: That makes no sense bec.

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