I've been replacing my HBA card and moving a few things around. So, I would not rule out that this is a cablign issue or I broke something.

Error is very weird though. I can no longer boot into Unraid.

I checked the Flash card and run chkdks and chkdsk / r in windows. No error returned.

When I boot, it gives me the error message that my disk migh crash at any time and asks me to go press F1 for bios. I am aware as one of my nvme disks is beyond its normal useage. But per se nothing that should scare me and also not what should be leading to this error?

The issue is that it doesn't go passes this screen. When I go into bios, it shows the flash disk being the primary boot disk. So, that's also not the issue.

I booted without the HBA disk and also removed all sata disks, but no change.

Any idea what leaves me "stuck"?

Screenshot below

There's an apparent SMART error with a device, there may be an option to disable SMART monitoring on the BIOS. Alternatively, disconnect one device at a time until you find the culprit.

I do believe I have a SMART issue for a long while. You helped me validate that this can safely be ignored (only due to disk used longer than suggested lifespan). And I had rebooted many time since and never faced an issue.

It's an NVME, so quite painful for me to uninstall the disk. Let me try whether I can disable SMART checking in Bios. I didn't see such setting though.

Is it meant to be like this that it just stops booting if one disk fails smart?

I think I fixed it by replacing the mobo battery and/or by updating firmware.