I have not bveen able to use Rockstor for 18 months now because it wont install on my later hardware. It isnt the fault of Rockstor per-se but that fact that its based on a 2015 Centos version which itself will not install on modern hardware.
The problem isn’t the kernel its the installer amd I have tested this ad-nauseam with vanilla centos. The Rockstor release and below <=1511)of centos just will not install on later uefi hardware. Its as simple as that. As a result I have never been able to use the Rockstor I bought once I gor my dedicated low power motherboard.