You have just installed a second hard disk drive into a system by adding it as the second drive on the existing IDE cable. When you restart and enter the BIOS configuration program, it can detect neither drive, even though you can hear that both drives are spinning.
What is the most likely cause of the problem?
1. You did not connect the power cable to the new drive
2. The new drive is defective.
3. >>You need to set one drive as the slave and the other as the master.
4. The IDE cable is defective
Explanation : If you add a second hard disk drive to an IDE cable and do not adjust the jumpers, the BIOS may be unable to detect either drive. If both drives are set as Master or both set as slave, neither will be detected. Since the original drive worked until you added the second drive, both being set as Master is the most likely cause of the problem. If you are using an 80-conductor cable for a UDMA/66 or faster interface, both drives can be set for Cable Select.
If the IDE cable were defective, the original drive would not have worked before the addition of the new drive unless you damaged the cable during the installation.
Not connecting the power cable to the new drive would not affect the old drive. Neither would adding a defective second drive.
Objective: Personal Computer Components