I have a WD Caviar Red 4 TB drive that reads at speeds below 1 MB/s. It goes up to maybe 7 MB/s, and occasionally spikes up to 10 MB/s or 20 MB/s at its best. I’m not sure what’s wrong with it. But this started recently… I think… since I installed Windows 10. Yes, I have it installed in a tower PC. I use it for storage though, and a Samsung SSD for the system.
Are there any known compatibility issues between Windows 10 and WD Red drives? It’s not very old and it has worked perfectly fine under Windows 8.1.
Is there any chance that the disk simply is not spinning up properly? I think I hear it spin up sometimes, very intensely. I have several disks, so it’s hard to tell which one it is. But there is no grinding noise or anything like that. None that I recognize anyway, or that I can hear.
Is it possible to read the spindle speed via the SATA interface? Is there any pre-built tool for that? I wouldn’t want to build it myself. Perhaps the WD diagnostic tool has such feature? That would be a great tool to have.
The disk actually jumped up to 120 MB/s yesterday. But it doesn’t want to do it again today.
The model is WD40EFRX.
The disk appears in BIOS, in Explorer, I can explore the content, read files from it. It appears to be normal. But this reading speed is embarrassing! I haven’t tested doing a write operation because of fear of data loss.