Rob Sivak wrote:
Both my new 5TB Seagate Portable HDD (TM backup drive), and my new 2TB Samsung SSD (data) USB-C drives are self-ejecting improperly at random intervals from my 4-month old Macbook Pro 16" (running latest MacOS, Sonoma 14.3.1), despite swapping in new cables, switching ports, connecting only one drive at a time, rebooting the Macbook and adjusting the Settings to allow USB connections without asking.
My Apple store tech suggests it could be a USB bus bug on my MacBook Pro and
he's sent it out for a bench analysis, so we'll see...
So why the post?
You can submit your feedabck to Apple—they are not going to read your analysis here
submit your Apple Feedback here: Product Feedback - Apple
I never had your issue, currently I am on 14.3.1 as well..
.I would suspect software incompatibility, not hardware:
Uninstall all third party apps that are Cleaners/Optimizers/VPN/Anti-Virus — does any of that seems applicable to you(?)
all known to cause issues on the macOS
other known third party issue— but not as likely for your issue
third-party sync software like: OneDrive, GoogleDrive, BackBlaze or DropBox
To trouble shoot further you can:
—Test issue in another user (or guest user) account Change Users & Groups settings on Mac - Apple Support
This will tell you if it a universal issue or isolated to your user/admin account.
—A SafeBoot Use safe mode on your Mac - Apple Support will sort many anomalies
Does a quick disk repair before it fully boots up, and certain system caches get cleared and rebuilt, third party system modifications and system accelerations are disabled.
Login and test. Reboot as normal and test. Caches get rebuilt automatically.
This test will tell you if third party interference; most* extensions etc are not loaded in safe boot mode.