So do i have two bad drives of is somthing eles going on.

Diagnostics attachned.

I did have a different disk with a read error the other month.

carbonblack-diagnostics-20260601-0808.zip

Both disks dropped offline; it looks more like a power/connection issue. Check/replace cables, especially if both disks share something, like a power splitter.

Ok, I will have a look when I get home from work.

Should I follow the steps in Re-enabling a disabled disk (rebuilding onto itself). Can I do both desks at the same time?

Replacing disks in array | Unraid Docs

You may need to replace disks in your array for two main reasons:

You can do that, and rebuild both at the same time, but make sure the emulated disks are mounting and the contents look correct before rebuilding on top.