
The remaining 4TB's still operate as before. The only difference between then and now is that two HDD's that were not part of the original test have suddenly died despite not having many operating/running hours. I've attached a report that was compiled in August last year and sent to Western Digital. (would basically take roughly 15 days to fill up per drive) I'm hoping that someone has found a solution to this as I have already discarded several 4TB HDD's that don't work properly anymore. Or the inability to modify the drive partitions, labels, letters etc. Letters being assigned to an unpartitioned HDD or to one without a volume configured, Noticed odd encounters with drive partitions not working correctly, drive

I'm wondering if it isn't the system that I'm currently using because I have What's odd is that the drives were working on another system with an older operating system moment's before and now don't work anymore. The other allows access to the drive and the contents can be viewed, but any task that is done shows the progress bar which then completes in a couple seconds but nothing changes. The system shows the existence of the drives and 100% usage on the one but nothing else. Now today, I'm working with other HDD's, 1TB Western Digital and 1TB Seagate, and they suddenly died one after the other. Since then, the drives have been sitting in a box as they were past the return window and because they were externals, the warranty of the supplier had expired and they also showed no interest. So, I contacted Western Digital regarding their drives and they were not interested in helping me. The problem replicated once to a Seagate 2TB HDD and then later disappeared. The only consistent note was that the drives with the problem were all Western Digital 4TB 2.5" HDD's. I changed drive enclosures and swopped drives around with the original enclosures and still, the problem persisted.

I also connected the drives to USB2.0, USB3.0 and USB3.1 ports as well as USB C ports.

I then purchased a brand new 10th gen i7 system, installed Windows 10 21H1 on it and the problem replicated there.

I ran virus scans, HDD scans, changed the preference settings of the drives in device manager and so on without any difference, errors or otherwise on each drive. The problem first occurred on a 7th gen i7 system with Windows 10 21H1. This problem has replicated onto multiple drives and via all USB ports on two systems. In roughly June of 2021, I encountered a problem with the transfer speeds of data to external HDD's whereby the speed is running stably at 60MB/s and then suddenly drops to 3MB/s and stays there for hours. I'm curious as to whether anyone else has encountered these problems and if they've found a solution as so far, I have not found any solutions. I hope someone can assist me with a peculiar problem.
