Hi,
System specs:
Intel 9700K
ASUS Strix 2080Ti
2x16GB Corsair Veng 3000MHz DDR4
1xSamsung 970 Evo+ M.2 500GB (Windows 10)
1xSamsung 860 Evo SATA 500GB (Apps)
1xWD SATA HDD 1TB
1xWD SATA HDD 4TB (My Documents/vids/music/photos/ISOs)(the disk that has disappeared)
Corsair 850W PSU
3,000W UPS...