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1. #USB ACCESSORIES DISABLED MACBOOK AIR EXTERNAL HARD DRIVE PRO#
2. #USB ACCESSORIES DISABLED MACBOOK AIR EXTERNAL HARD DRIVE PASSWORD#
3. #USB ACCESSORIES DISABLED MACBOOK AIR EXTERNAL HARD DRIVE MAC#

#USB ACCESSORIES DISABLED MACBOOK AIR EXTERNAL HARD DRIVE PRO#

If your MacBook Pro is experiencing shutdowns when you’re not deliberately copying anything, the culprit might be Time Machine doing background backups to an external USB hard drive. The issue appears to be related to whole drives most of my drives have multiple partitions, which doesn’t seem to matter. But I eventually get a crash whenever I have multiple drives connected to multiple ports directly on the MacBook Pro. In my testing, my system appears to be stable when a single external drive is connected to one Thunderbolt 3 port or when multiple drives are connected to a powered USB hub that plugged into a single port. However, I’ve had no problems copying from my internal SSD to a singleĮxternal drive, and likewise was able to migrate from that drive when I set up the MacBook Pro. I now can get the same error message repeatedly when trying to do any large copy from one external drive to another, using either Apple’s USB-C to USB Adapter or an adapter from Aukey. Long-time TidBITS contributor Jeff Carlson had similar problems, but he saw different error messages in Console, seemingly related to I/O errors. In my case, I was presented with an error message telling me about the shutdown, with the messages “CPU Machine Check Architecture Error Dump” and “CATERR detected! No MCA data found” in the highly technical error report that automatically gets sent to Apple. Restarting the copy additional times resulted in similar shutdowns. The copy was going to take a long time regardless, but when I came back to check on its status, my laptop was powered off and I had to start it up again manually. I began researching this after I was unable to copy a large number of files from one external USB drive to another using my new MacBook Pro. The problem might be with external hard drives connected via Thunderbolt 3’s USB-C ports, which is, of course, the only way to connect them. If you’re using or considering buying one of the new MacBook Pro models with the Touch Bar (see “ New MacBook Pros Add Context-sensitive Touch Bar,” 27 October 2016), be aware that some people are seeing their machines shut down repeatedly and unexpectedly.

Some 2016 MacBook Pros Suffering USB Drive Problems

#USB ACCESSORIES DISABLED MACBOOK AIR EXTERNAL HARD DRIVE PASSWORD#

#USB ACCESSORIES DISABLED MACBOOK AIR EXTERNAL HARD DRIVE MAC#

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