[varispeed]

Lesson learned.

I needed it for an experiment where I had about 6TB of small files to process and wanted to have them on a single drive. It did the job and then I repurposed it for backup / dump drive for stuff I didn't want to delete, but also didn't now where else to put it.

The drive shows up in the system but with 0TB capacity, I recall once or twice it reported 8TB but I was unable to read anything.

I'll have a look one day maybe that was something simple like dead cap that I could replace (I have microscope, rework station).

[wtallis]

Are you using the drive in an external USB enclosure? Those sometimes have power delivery that cannot keep up with the demands of high capacity or high performance drives.

[varispeed]

No, it is mounted on the motherboard (Gigabyte with X570 chipset) also has a thick heatsink.