Introducción

The iMac G3 Uses a 3.5" IDE Hard Drive. It supports data partitions no larger then 128GB and boot partitions no larger then 8GB (The 8GB limit only applies to iMac G3 tray loaders).

The iMac G3. This was a great computer for the time, and had plenty of features.
  • The iMac G3. This was a great computer for the time, and had plenty of features.

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Start by flipping the iMac upside-down. It may help to lay it on a towel, so you don't damage the screen, or scratch the face.
  • Start by flipping the iMac upside-down. It may help to lay it on a towel, so you don't damage the screen, or scratch the face.

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Remove this Phillips screw. Using a flathead screwdriver, work your way around the bottom cover, until it comes off. Then, lift the bottom cover up and out, and set it aside.
  • Remove this Phillips screw.

  • Using a flathead screwdriver, work your way around the bottom cover, until it comes off.

  • Then, lift the bottom cover up and out, and set it aside.

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Now, remove the DB-15 Video connector from the logic board. It may be helpful to use a Phillips screwdriver to remove the thumbscrews. It may be helpful to use a Phillips screwdriver to remove the thumbscrews.
  • Now, remove the DB-15 Video connector from the logic board.

  • It may be helpful to use a Phillips screwdriver to remove the thumbscrews.

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Remove the power cable from the logic board assembly. Remove the power cable from the logic board assembly. Remove the power cable from the logic board assembly.
  • Remove the power cable from the logic board assembly.

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Remove the front panel connector. Remove the front panel connector.
  • Remove the front panel connector.

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Now, remove these Phillips screws. Now, grab the logic board assembly by the piece of plastic, and lift it out. Now, grab the logic board assembly by the piece of plastic, and lift it out.
  • Now, remove these Phillips screws.

  • Now, grab the logic board assembly by the piece of plastic, and lift it out.

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The logic board assembly. This is the heart of the computer, it contains the motherboard, CPU, RAM, V-RAM, PRAM battery, the hard drive, and the optical drive.
  • The logic board assembly. This is the heart of the computer, it contains the motherboard, CPU, RAM, V-RAM, PRAM battery, the hard drive, and the optical drive.

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Now to remove the optical drive!
  • Now to remove the optical drive!

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The optical drive is located near the front of the assembly.
  • The optical drive is located near the front of the assembly.

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To remove the drive, push it in, lift up, and then pull forward. As you pull the drive forward, disconnect the ribbon cable and set it aside. As you pull the drive forward, disconnect the ribbon cable and set it aside.
  • To remove the drive, push it in, lift up, and then pull forward.

  • As you pull the drive forward, disconnect the ribbon cable and set it aside.

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Remove the two phillips #00 screws. Then remove the board. This will reveal that it is a standard PATA drive. Congrats, the drive is free! You can use any PATA-tray loading drive in the iMac G3 which means you can install a CDRW to burn CDs in OS9 or X(if using OSX,install that DVD writer) but, of course only original drives will match the great look of the iMac).
  • Remove the two phillips #00 screws.

  • Then remove the board. This will reveal that it is a standard PATA drive.

  • Congrats, the drive is free! You can use any PATA-tray loading drive in the iMac G3 which means you can install a CDRW to burn CDs in OS9 or X(if using OSX,install that DVD writer) but, of course only original drives will match the great look of the iMac).

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Hard Drive Removal:
  • Hard Drive Removal:

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Start by removing these Phillips screws: Now, remove all of these cables:
  • Start by removing these Phillips screws:

  • Now, remove all of these cables:

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Now, remove the optical drive retention spring. Push in on both sides, and pull towards you releasing the retention spring.
  • Now, remove the optical drive retention spring.

  • Push in on both sides, and pull towards you releasing the retention spring.

  • It may help to do it one side at a time.

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Now lift the drive up, and pull it out. Make sure that no cables are snagged before completed pulling out the drive! Make sure that no cables are snagged before completed pulling out the drive!
  • Now lift the drive up, and pull it out.

  • Make sure that no cables are snagged before completed pulling out the drive!

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When installing a new drive, make sure that the drive jumper block is set to "Single drive". In most drives, this means removing the jumper, or positioning the jumper horizontally instead of vertically, so you don't lose it.
  • When installing a new drive, make sure that the drive jumper block is set to "Single drive". In most drives, this means removing the jumper, or positioning the jumper horizontally instead of vertically, so you don't lose it.

  • To remove the drive from the metal caddy, remove these four screws from the side of the drive.

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Conclusión

To reassemble your device, follow these instructions in reverse order.

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Chris Green

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great description, great photos

antiquarian1 - Contestar

Many thanks. Worked perfectly.

Bob Schowalter - Contestar

is the hard disk on a mac interchangeable to iMac 4984 from iMac M5521? Power supply failed on M5521. thx

alexa pritchard - Contestar

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