Incogni

No, because they aren’t mapped under /dev/sdX ( ͡° ͜ʖ ͡° )

Just use nvme drives and this will never happen to you again!

In regards to the memory training: have you double-checked how much Ram your CPU actually supports, at what frequencies? For example even the 7950X3D supports only DDR5-3600 when you put more than 2 bars of ram in, leading to issues with memory training taking long/not posting/instability if you enable any form of overclocking in that scenario. I had that problem before and switching from 4 bars to two fixed everything. Just in case this might be your issue as well.

uBlock Origin, to be precise!