Chosen Solution
My Late 2013 MacBook Pro died and Apple’s assessment was logic board failure. I now have a MacBook Pro 2019 and I want to get the data from the SSD on the old laptop. I bought an OWC Envoy Pro with USB and I put the old SSD in it. Connected it to my new MacBook via an Apple dongle and… nothing. The case has a light that flashes at a regular interval (~1s), but nothing comes up. I haven’t been able to find anything around what the regular flashing light means. My old MacBook was running Mojave, and the new MacBook is running Catalina. So it should have the right firmware to read the drive. Terminal command “diskutil list” yields only the internal drive, so does Disk Utility UI. System Report doesn’t show anything either. The only thing I find suspicious is that under “USB”, it only shows the dongle I use: “Apple USB-C Digital AV Multiport Adaptor”. Is it because of the USB to USB-C conversion? What am I doing wrong? Thanks in advance!
Do you still have your old system? If you do, put the SSD back in and plug in the MagSafe charger. Now lets give this a try! Restart your system but press the T key are you able to get it to come up in Target Disk Mode? Understanding the Applications for Target Disk Mode If you are then we can try to leverage your old system to gain access to the SSD via a Thunderbolt cable to Thunderbolt to Thunderbolt3 dongle on your new MacBook Pro Apple Thunderbolt 3 (USB-C) to Thunderbolt 2 Adapter. If still can’t gain access then the SSD was really the problem with your older system.
