The system report recognises the drive in any given USB / Thunderbolt bus I connect it to, it spins, after waiting forever for it to show itself and any of the data on my screen it will either give me an error that the data can't be copied or the disk will get ejected before I can even do any of that stuff. I've tried connecting a brand new external hard drive and it got randomly ejected too so I guess it wasn't the drive's fault especially since I connected both to my iPad and they worked well enough. It can also be bought from B&H Photo, starting from 104.99 for 500GB. Every now and then it will show up in disk utility (however, only one of the two partitions I have on it) and it won't even go through First Aid because the disk will eject before it even progresses a little bit (an it takes forever). The SanDisk Extreme Portable SSD is available at Amazon, starting at 104.99 for 500GB, rising to 459.99 for 4TB. Doesn't matter which USB port I use, it will get ejected when least expected. So for the past few weeks I've been experiencing my mac randomly ejecting my external hard drive.

This issue did not occur at all until Monterey. I have done nothing to change the hardware configuration of my iMac through repeated macOS upgrades. It did not occur in this way with any previous operating system on my iMac unless I actually DID improperly disconnect one of these external hard drives. It can also occur when I wake up my iMac, but it also and annoyingly occurs spontaneously while I am actively working. I am just sitting here doing routine tasks on my iMac and I get these alerts, one after another, with no hardware changes, no software changes and no settings changes. My iMac repeatedly and spontaneously alerts that both of my external (Thunderbolt) LaCie hard drives have not been 'Ejected Properly.' I repeat, this is entirely spontaneous. Help secure your hard drive and keep productivity flowing with password enabled 256. The western digital ssd external hard drive for mac m1 allows for good size, It is perfect for fast transfer and has a mini design. However, Apple is doing nothing about it. The Western Digital Ssd External Hard Drive For Mac M1 has killer features for the price point. Disk Not Ejected Properly - Monterey Problem This is not a new question - see: Disk Not Ejected Properly - All of a sudd… - Apple Community

Mac mini m1 external ssd