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Adding a 2nd IDE hard drive
to B&W G3 rev 2 and G4 Mac Systems

(Page 2 - Installing the New Drive)

by Mike
Published: 11/4/2000

Step 3: Mount the New Drive

Now that we have the drive bracket out using the previous page instructions, we are ready to install the new drive on top of the existing one.

Once the drive bracket assembly is removed from the case, remember to check if your drive is a Western Digital model (noted on the drive label). As mentioned in the jumper settings info on page 1, Western Digial drives (and some Quantums) have to be set to 'master' instead of the default 'single drive' when adding a 2nd (slave) drive. For other drive brands you should not have to change the original drive's settings when adding a 2nd (slave) drive. (The Maxtor drive in this system didn't need any settings changes.)

You're now ready to mount the new drive on top of the original one. Note that when facing the connector end of the drive, the bracket has a fixed 'wall' on the right side, but flexible 'wings' (as I call them) on the left side. You mount the new drive to the fixed (right side) of the bracket first. Retail drive kits will have 4 screws included, if not you'll have to obtain them elsewhere. (I think the new macs include 4 screws in a bag in the accssories box which would work also.)

The photo below shows my IBM 75GXP drive attached to the right side of the bracket with 2 screws.

first 2 screws attached

Once the 2 right side screws are attached, you then do the same for the left side. You have to press the bracket's 'wings' in toward the drive with the screwdriver to have it contact the drive. The photo below shows this.

Securing left side

Step 4: Drive Jumper Settings

The photo below shows an IBM 75GXP drive mounted on top of the original Maxtor drive. The red circles denote the drive jumper settings (Slave setting for IBM, Master for Maxtor).

drive jumper settings

As mentioned previously, the IBM 75GXP "Slave" jumper settings are with the two jumpers in the rightmost positions as shown in the photo above. The original Maxtor "Master" drive jumpers are also shown (just as they shipped from the factory). The sideways jumper on the Maxtor drive is not really needed and does nothing in the horizontal position. (Maxtor includes it for cases where their drives are used in older PCs which cannot address the full size of the drive and need special jumper settings that require 2 jumpers.)

Step 5: Reinstalling the Drive Bracket Assembly

Now that the new drive is mounted on the bracket and jumpers are set correctly, you simply slide the bracket assembly back in the case. There are two metal tabs on the bottom side of the bracket that mate into cutouts on the case floor - so guide the bracket into the case to make sure the tabs seat into the case. Then secure the bracket with the screw removed previously. Note: You may find it easier to attach the power connectors to the drives (especially the lower one) before securing the plate into the case.

Once the drive bracket retaining screw is installed, you can attach the IDE cable to the drives. (The connector on the end of the cable mates to the bottom drive, the middle connector to the top drive of course). Make sure the connectors are fully seated (I run my finger across the connector pressing inward). It only takes a slight amount of unseating to cause a problem with pin contacts.

The photo below shows the bracket installed back inside the case and all cables connected.

Bracket Reinstalled

After checking that all power and IDE cables are connected properly, you're now ready to close the case boot the system.

An illustrated guide to using Drive Setup is shown on the next page. Update: This article was originally posted *before* OS X was released. For those using OS X - I recommend using OS X's Disk Utility to format the drive. It's also on the OS X install CD (selectable from the menu of the installer CD). Make sure you select the option to install OS 9 drivers on the new drive if you want to boot to OS 9 from the drive. (The newest Macs can no longer do that but previous models can - if you forget to check that option you will not be able to boot from OS 9 with the drive.)

Next Page: Formatting The Drive

Related Links:

For other storage related articles, check the Main Site IDE, SCSI, or Firewire articles pages, which have other guides and reviews of drives, controllers and more.

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