I have a similar situation with Tmmausol,
I have 3 storage drives 1 250 gb Samsung SSD where I have installed Win 10 and 2 WD HDDs: one 700gb and the other, newer with 3 tb. All 3 drives were visible in the beginning, but after i reinstalled Win 10 the 700 HDD "vanished" but it is still present on Manage. Once it was available for a short time but after that i couldn't access it again.
I have 3 storage drives 1 250 gb Samsung SSD where I have installed Win 10 and 2 WD HDDs: one 700gb and the other, newer with 3 tb. All 3 drives were visible in the beginning, but after i reinstalled Win 10 the 700 HDD "vanished" but it is still present on Manage. Once it was available for a short time but after that i couldn't access it again.
