Catalina - External Hard Drives repeatedly ejected without cause.

Yes I understand. However using a different machine will be good practice as it will eliminate that possibility that other hardware or software issues (none that I know of) are causing the problem.

I will report back - may be a couple of weeks.

Regards

same issues with my early 2015 MBP Retina upgraded to i7 3.1GHtz 16G RAM (after keyboard failure/replacement) and using G-Drive Mobile 4T external, but my symptoms are much weirder; my MBP has been running flawlessly for months, but now i experience not only the unprompted eject problems; they seem to coincide with memory usage, the wireless adapter appears to disconnect/reconnect also, and my cursor lags/jumps. this has all persisted through a complete wipe and fresh reinstallation of Catalina. i have no doubt that this is mostly an issue on the Apple side of things. why?

Is there a solution yet for this issue?? I have searched and found a few fixes but nothing has worked. I am just using a USB thumb drive and it keeps hanging on the importing of photos then suddenly ejects with the warning of improper ejecting of a hard drive. I have a rugged with a cable I need to use but am not wanting to try it for it might damage the contents. Apple help?? Please. I have read posts on this issue since Yosemite. MacBook Pro (Retina, 13-inch, Early 2015) Catalina 10.15.4

I am having the same issues with a Thunderbay and 2 external WD drives. I will attempt the drive spinning utility, it’s disappointing. Top of the line IMac 2019 and I am unable to use the machine the way it’s intended.

Thank you, It seemed to be a pretty decent product specially now that it has been added to the mac store but I will try to remove it as I prefer my external drives to work, it's extremely frustrating. what's odd is that my issues is with USB not Thunderbolt, the thunderbolt drives attach (Thunderbay 4 and G-Tech Raid drives both on thunderbolt 3) are working fine.

I now use Carbon Copy Cloner for that, then I can take the external drive anywhere and access any data via mac or pc. I used to use TM but it's limited... as I unfortunately found out when an old mac died.

My understanding is that Apple puts a priority on addressing new bugs, but largely ignores bugs that have been around for more than a certain length of time. This largely explains issues in macOS such as the random resorting of the widgets in the today view, the random changes in the task bar, and the issues with hard drives that have been around for many many years.

Haven’t had this issue until today after updating to 10.15.5.... 2018 15in MBP... I have a TB3 dock that has 2 Lacie drives off of it. One via TB3, the other via USB3.... The USB3 keeps randomly ejecting.... I saw some comments about power settings. I know in the latest release they pushed a battery update that better manages the battery. My MBP is always plugged into the dock so not sure why if this would affect it but going to try and troubleshoot some power settings to solve this. Any insight would be greatly appreciated... clearly a very long lasting issue.

Apple has a separate Feedback that you'll never hear back from either. :(

These boards are to help relieve Apple from the enormous number of Problems that MacOS & iOS can create... Sometimes I feel bad about helping Apple out of the insane 1 step forward, 2 steps backwards & 12 steps sideways upgrade cycle, but I'd want help of I was stuck... so here I am still. :(

Can't say I blame you. For me, 10.16 (the next version of macOS) along with iOS 14 are going to be a critical in determining the tech I use in the future. If Apple don't get these right, I'll be abandoning Apple products for good, and I'm a long term user with an entire household using Apple tech. I've been using Apple products since the Apple 2e, and am a self-confessed ex fanboy, but the current state of Apple and the reliability issues have gone well beyond what I am willing to accept.

I lost a drive this morning. Booted up my machine, and the drive came up as unformatted. This is a new drive, that was bought to replace a previous one THAT DID THE SAME THING. All the data is now gone, 2TB worth. Fortunately, most of this is in cloud storage, but now I'm faced with having to reformat the drive and re-download all the data, which will take weeks due to slow download speeds from one of my cloud providers. It also means I probably didn't need to buy a new drive, which is a further waste of money. I'm so sick of this nonsense from Apple. It's getting to the point where I spend more time fixing my Mac than using it.

Thanks for the link. I can see this will be really helpful, as Time Machine is currently not working properly either. I'm getting repeated errors with it not being able to create a local snapshot and one of the main drives in the software raid I use for backup is showing as not available in Disk Utility either. This is despite it indicating the same level of backup storage available.

Thanks for the idea - sadly no dice.

No issue reported with the drive, no repair needed. As soon as the iMac Pro is left unattended the drive disconnects. Its really making the machine unusable. I'm copying assets that are 500/600Gb at a time, it's no use to me if it times out during that kind of operation.

I'll have to take it up with Apple, they've basically killed my machine for the purpose for which it was bought.

I've been thinking about downgrading to Mojave - since Catalina to be honest... Well seeing as all my apps are 32 bit, and my external drives all worked, and even good old iTunes worked with with my iPhone X for backups & podcasts... An old saying, "If it ain't broke, don't fix it.. in other words, Apple shame on you for breaking what did work...... CR-Apple, come back Steve Jobs, at least you innovated... :-/