5 Things To Consider When You Install a SATA Hard Drive
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Hard drives with a Serial ATA (SATA) connector were introduced to replace IDE and Enhanced IDE (Parallel ATA) drives. SATA removes the master-slave relationship between hard drives (parallel), as each drive connects directly to a SATA host adapter or port (serial). Data transfer speeds range from 150MB/sec (SATA) and up to 300 MB/sec (SATA II). The SATA interface cable can be up to 1m long, which is an advantage in a large computer case.
Ready to upgrade your hard drive? Before you install a SATA hard drive, however, there are several things to consider. I have summarized the most important points in this article.
Safety Guidelines
Installing new hardware isn’t rocket science. However, it can be dangerous for you and your computer, unless you follow a few simple guidelines:
Ground Yourself
To avoid hardware damage from an electrostatic discharge you have to ground yourself, i.e. discharge your body’s static electricity before you open the computer case. If you don’t own an anti-static wristband (see image below), you can ground yourself by touching a solid and grounded piece of metal, for example the leg of a table or the metal case of your computer.
Power Off
After grounding yourself and before you open the case of your computer, make sure the computer is turned off. Shut down Windows and turn off the power supply through the rocker switch on the back of the computer. Alternatively, you can unplug the power cord.

Connector On Motherboard
If your computer is not the latest model and initially came with an IDE hard drive, the motherboard might not provide a SATA connector. To find out, have a quick look into your case to check your hardware setup.
First check what type of interface cable your current hard drive has. The image below shows what SATA (red, left) and IDE (grey, right) cables look like.

If your old hard drive is IDE, look for the SATA connector on your motherboard. If it’s a SATA drive, double-check whether another SATA connector is available on the motherboard, given you want to keep the old hard drive installed. The next image shows part of a motherboard with two SATA connectors (purple).

Should you find that you don’t have a Serial ATA connector (available), you can upgrade your motherboard with a SATA PCI card. Make sure you have a PCI slot available on your motherboard (image below).

Let’s Summarize:
- Identify available SATA connectors on the motherboard.
- If necessary install a SATA PCI card.
Cables
In case your hard drive didn’t come with a complete set (they usually do not), make sure you have all the required cables. What you need is the SATA interface cable (red cable in image above) and either a 4-pin Molex power connector or a SATA power cable. The former is the same cable that IDE drives require. The SATA power connector is depicted in the following image.

SATA drives typically come with both types of power connectors (numbers 1 and 3 in image below), so you can use either the Molex or the SATA power connector. Do not use both at once!

Taken Together, You Need To Consider The Following:
- You need one SATA interface cable for each SATA hard drive.
- To power the drive, you need either a 4pin Molex or a SATA power connector.
- Never connect both power connectors at the same time or you could damage your drive!
Installation Procedure
Apart from the hardware requirements, installing a SATA hard drive is no different than installing an IDE drive. The following YouTube video demonstrates the installation procedure.
For more practical installation tips, check out the following articles:
- How To Install A Second IDE Hard Drive On An Older PC
- How To Physically Install A Second Internal Hard Drive
Configuring the BIOS
You might not have to make any changes to the BIOS. However, if your computer doesn’t detect the new hard drive by default, you may be able to fix this in the BIOS. Since BIOS options are not standardized, I can only give you a vague guideline here.
To launch the BIOS, you have to press a special key before the computer boots into Windows. This could be the DEL, ESC, or F1 key. The exact key is usually indicated while you’re booting, the text on your screen could be ‘Hit DEL to enter Setup‘ or similar.
Once you’re in the BIOS, see if you can find an option to auto-detect new hardware. You should also find a list of identified hardware and how they are connected. If you’re using a SATA host adapter / PCI card, your hard drive may be classified as a SCSI device. This is normal and won’t affect the performance or capacity of the hard drive. Before you exit the BIOS again, be sure to save your changes.
As I said, it’s not rocket science. Did you expect tougher challenges when you install a SATA hard drive?
Image credits: Sergii Korolko, David Brimm, Alberto Pérez Veiga, Pavel Matras, Karkas, Renewer, Dino O.
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Tue, 08 Mar 2011 16:31:16 GMT
Tags: disk, DIY, Feature Articles, hard drive, hardware, install, tech support, tutorials,
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