RW writing problem

[Demon Cleaner]

But, now you have your two new HDs in the system don't you have a space HD?

That is in my barebone PC and both disks are mirrored, so no free space.

What I will try is to restore an image where I still had Kaspersky active, to see if the problem is still present or not. If so, something is wrong with the hardware, otherwise it's a software problem.