I'm receiving errors during POST. This one is Volume (Hd1:079) is currently in state degraded. This is not the first time - normally it rebuilds itself and is fine. System is in Raid 1 array.

This time I want to replace the faulty disk. Problem is, I don't know which physical disk to replace - the one on the left by itself or the one on the right beneath the optical drive.

Can some help please?

 

Thanks,

Frank