You have an existing hard drive on your IDE adapter. You are installing a second hard drive and want the first hard drive to still be the bootable hard drive. How should you configure the second hard drive?

On IDE/PATA systems, when two drives are on the same channel, one must be configured as Master and the other as Slave. The Master drive is typically the bootable drive. To keep the first drive as the bootable drive, it should remain Master, making the second drive Slave. Option A would cause conflicts if both are set to Master. Options B and D are not valid IDE configurations - 'Beta' and 'Secondry' are not standard jumper settings.