I decided to piece together an old system to run Server 2012. It has several hard drives, 2 SATA and 2 PATA. All the disks work great except for one, a SATA Maxtor 6 L100M0. This disk has always worked in any other operating system but for some reason it doesn't in Server 2012. The operating system has no problem seeing and identifying the drive but what's strange is that it shows a capacity of 0.00 B. Again, this disk worked great in all other OSs. I wiped the drive, re-partitioned using a recovery boot disk using MBR and still fails to show a capacity other than 0.00 B. In Server 2012's disk management it won't initialize or reset. Both end up in an unknown error. Anyone know how to fix? Thanks! The motherboard is a Gigabyte EP35-DS3L, Q6600, 4GB DDR2, GeForce 7100.