This seemed promising, so I took a peek in the Finder and lo and behold, both partitions of the drive were there!
Which was also the last event before I switched the drive back on. Now, I saw the following sequence of events repeat several times (leaving out the information that came with the events): ***DiskPeekĪnd finally a few times ***DiskDescriptionChanged I switched the external drive back on while the command was still running. I ran this command and switched off the bricked external drive. When you run this command, it will start monitoring all disk activity and report back to you until you stop it again. Reading the man page of diskutil, I found a command that I thought might provide at least some diagnostics on what was wrong: diskutil activity If you know of a different solution that worked in your case, please feel welcome to share as well! I'm asking this question retroactively to share the solution I found. Its documentation does not clearly state that it will be able to find a disk that doesn't already show up on your mac.It is only for Windows, or it requires creating a bootable flash drive before you can run it.However, in this case, none of the programs I could find appealed to me, for at least one of the following reasons in each case: Try these first and see if you can fix the issue or not, 1. But before moving on to the actual fixes, below are some quick tips.
#MACBOOK EXTERNAL HARD DRIVE NOT FOUND MAC#
Our guide will help you enable Mac to delete or remove files/folders from your external hard drive. There are lots of (free) tools available online that promise to help with recovering compromised disks, including some that are provided by disk manufacturers. Enable Mac to Delete or Remove Files/Folder from External Hard Drive.
#MACBOOK EXTERNAL HARD DRIVE NOT FOUND SOFTWARE#
When I switched it on, the drive would briefly spin up and then spin down again, but none of the software on my mac would confirm that it was connected. Furthermore, I had a strong suspicion that the problem was caused by a poweroff while the external drive wasn't (fully) unmounted, because Finder was showing a warning about disconnecting before unmounting for both partitions of the drive. This question is related to External drive does not mount after plug off without eject, but the difference is that in my case, the drive did not appear in the Disk Utility application nor in diskutil list.
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