A technician purchases a new 120 GB IDE hard disk to use in an old server as a swap drive. After adding the drive to the server， the technician discovers that the operating system does not detect the drive.   After rebooting the server， the technician notices the drive is missing from POST and comes to the conclusion that the BIOS needs to be updated. The technician downloads the latest version of the BIOS update from the manufacturer website.   Which action should the technician take next？（）

• A、 backup the BIOS configuration to use later
• B、 install the BIOS update from a command prompt
• C、 create a bootable floppy and copy the BIOS update tools to the floppy
• D、 read the manufacturer’s guidelines and recommendations on installing the update