Microsoft W840DI manual For Non-RAID Users, Users Guide, The HDD Drives, Page

User's Guide The HDD Drives

4.3For Non-RAID Users

With the exception that you are going to install two Windows bootable HDD drives into these sockets, in general there is no need to distinguish which socket is primary socket and vice versa. Below are the three major scenarios:

•One Windows bootable HDD drive: You are at your liberty to use either one of the two sockets. But primary socket is your preferred choice for the bootable HDD drive.

•One Windows bootable HDD drive and another Windows non-bootable HDD drive: You are at your liberty to use either one of the two sockets for the bootable HDD drive. Again primary socket is your preferred choice for the bootable HDD drive.

•Both HDD drives are Windows bootable: Choose the HDD drive you want to have the system boot up from and have this drive installed on the primary socket.

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