V VerizonLover macrumors member Original poster Apr 16, 2012 60 16 Feb 22, 2019 #1 Whenever I plug in my external Thunderbolt hard drive, the fans spin up until I unmount (but not unplug) the drive. Why is this?
Whenever I plug in my external Thunderbolt hard drive, the fans spin up until I unmount (but not unplug) the drive. Why is this?
MacManiac76 macrumors 68000 Apr 21, 2007 1,938 858 Arizona Feb 22, 2019 #2 It’s possible macOS is trying to index the drive while it is mounted.
BLUEDOG314 macrumors 6502 Dec 12, 2015 379 142 Feb 22, 2019 #3 Plug it in and let it spin up, then take a look at activity monitor. Look at the cpu tab and filter by highest usage.
Plug it in and let it spin up, then take a look at activity monitor. Look at the cpu tab and filter by highest usage.