I use EverFocus EDR1600 DVR. I must replace the HDD#1 and HDD#2 with new hard disks. How I will do this thing? I remove old disks from upper and down tray and put new disk in upper tray (set as master) and put new disk in down tray (set as slave). Disks are formating as NTFS file system. When I power up DVR everything likes OK but DVR does not recording. Configuring say : "Disk not present" Please tell me how do I will install my new hard disks in system?