Please ensure to use below mention BIOS and RAID driver version to setup RAID 5.
1. Update to new BIOS as A85AO320.BST.
=> https://download.biostar.com.tw/temp/beta/Hi-Fi_A85S_RAID5/A85AO320.rar
2. Download right RAID Driver depend on your operating system.
=> 2.1. Win7 32B/64B RAID Driver : v3.3.1540.40
==> https://download.biostar.com.tw/temp/beta/Hi-Fi_A85S_RAID5/AMD_A85_RAID_Win7_32_64_3.3.1540.40_Driver.rar
=> 2.2. Win8 32B/64B RAID Driver : v3.8.1540.14
==> https://download.biostar.com.tw/temp/beta/Hi-Fi_A85S_RAID5/AMD_A85_RAID_Windows_3_8_1540_WHQL.rar
