I have a new build using Azrock z77 Extreme 4 Mobo with 1 SSD and 1 HDD. The SSD is a new Samsung 840 Pro and the HDD is old 750GB Maxtor I had in a previous machine. I put the SSD on SATA3_0 and put the HDD on SATA2_2.
The issue is that after a little usage on the HDD, it will disappear from system (e.g. Disk Management shows, "Not Initialized". Rebooting will restore it to working again. After reboot if running SeaTools and performing diagnostics, it shows no issues with the drive.
Any thoughts on what could be the issue? I have tried swapping the SATA cable as well as the port with the same issue.