Question Drives randomly become unallocated

Dec 30, 2020
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My PC has 5 drives: a system NVMe M.2 SSD, two SATA SSDs, and two SATA HDDs. Once in a while all the SATA drives would suddenly disappear from the explorer. Disk Manager shows them as unallocated with seemingly empty MBR partitions. While the partitions on the disks can be recovered and re-assigned their drive letters back, the issue keeps persisting for several days now.

Sometimes it happens while the PC is running and other times during a reboot seemingly with no correlation to workload or any specific tasks running. I have tried forcing Windows updates, running DISM/SFC, and scouring the Internet in search of solutions to similar problems, but I have found nothing so far.
 
Dec 30, 2020
2
0
10
0
Windows 10 Pro 64-bit
AMD Ryzen 9 3900X
32.0GB Dual-Channel G.SKILL @ 1799MHz (18-22-22-42)
Gigabyte Technology Co. Ltd. X570 AORUS MASTER Motherboard
NVIDIA GeForce GTX 1080 Ti
Samsung SSD 850 EVO 500GB (SATA)
Samsung SSD 850 EVO 250GB (SATA)
TOSHIBA HDWE150 5TB (SATA)
TOSHIBA HDWE150 5TB (SATA)
Samsung SSD 970 EVO Plus 2TB (M.2)
 
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