Note: This guide is for installing an IDE drive.

What you need to install:
1. A new IDE hard drive
An IDE hard drive looks like


2. A 40-wire or 80-wire Data Cable

The older 40-wire and the newer 80 wire are both 40-pins! Well, actually, their 39 pins. One pin was removed that was never used so people installing hard drives wouldn't connect them backwards. If you scroll up and look at the motherboard connector at the beginning of this article, you'll see the 19th pin removed so that these cables can't be connected the wrong way.
See the picture below...

The 80-wire is much stable than the 40-wire. It is recommend to use the 80-wire IDE cable.

3. Your motherboard should have IDE hard drive controller connections.


4. A screwdriver

What you should do before start:
1. disconnect the power and remove your PC's cover. 
2. Keep the drive in the protective anti-static container until ready to install.
3. Do not apply pressure or attach labels to the circuit board or the top cover of the drive.

Select the right instructions for your case:
a . Master/Slave Mode
If you have only one IDE hard drive controller connection and you want the new hard drive to coexist with the old one, you will have to use the master/slave mode. If you have two or more IDE hard drive controller connections and cables just bypass this chapter(click here) . In Master/Slave Mode, two hard drive will share the banwidth of one data cable. The data transfer speed will be limited.

1. Select the Jumper settings Jumpers are metal pins that have small black plastic sleeves that slide over the top of them, they are used to configure certain devices, including hard drives. For the location of the jumper selector see the picture below , the jumper settings should be displayed on the hard drive label or in the manufacturer's book.    master/slace selector the place to set the jumpers. One of your hard drive should be set as Master and the other one should be set as Slave. Please refer to your hard drive manual to find out how to set the jumpers. 2. Use the screwdriver to install your new hard drive to the driver bay. Please install the master hard drive above the slave hard drive. 3. Connect the data cable and power cable. Connection A plugs into the motherboard and then the slave and master connections are used for IDE devices such as hard drives. After install the cables:

1. Select the Jumper settings The place to set the jumpers. All of your hard drives should be set as master or stand alone(CS) mode. Please refer to your hard drive manual to find out how to set the jumpers. 2. Use the screwdriver to install your new hard drive to the driver bay. 3. Connect the data cable and power cable. Connection A plugs into the motherboard and then the  master connections are used for your IDE hard drive. After installing the cables:

FAQ :
Ask: Can I connect a older ATA33 drive with my newer ATA66/100/133 drive?
Ans: Yes. But, you'll suffer a dramatic speed hit. Because of the slower drives controller, the PC will accommodate both drives by slowing down the pair to the older drives speed. Put your older drive on the Secondary channel with your CDROM as the Master.

Ask:  What position should I connect my CDROM Burner if I want to put it on the 40-wire cable?
Ans:  It should be the Master, and the hard drive (if you have one) Slave.

Ask:  Can I put my brand new CDROM Burner on the Slave position on my 80-wire cable?
Ans:  I wouldn't. That would slow down the hard drive.

Ask:  Why does my motherboard detect my ATA100 hard drive as a ATA33 or DMA mode 2?
Ans:  Some hard drives need to have a special driver that was supplied by the manufacturer to turn-on the ATA66, 100 or 133 feature.