1.83 GHz Core Duo 또는 1.83, 2, 또는 2.16 GHz Core 2 Duo A1208 (EMC 2104/2110/2114/2124)

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Why won't disk utility recognize my new hard drive?

We just followed the instructions to install a new hard drive on our imac, but Disk Utility won't recognize the drive.

I read some people need jumpers to get the new drive to work, but I'm not sure that applies in our situation. We have a SATAII drive, and it looks like you only need jumpers for SATAIII drives.

Any suggestions to fix this problem?

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In case this information helps, our old hard drive is a Western Digital WD1600JS. The new hard drive is a Seagate Barracuda Green ST1000DL002.

We didn't have any problems following the installation instructions, and just to double check that everything was connected properly, we just went in and re-did the whole install of the new drive being careful to check the connections.

When we hold down the option key and boot from the Snow Leopard Install DVD, and then select Disk Utility from the Utilities menu, no hard drive disk shows up. When we click on System Profiler we don't see the new hard drive information there either.

Any ideas what the problem could be?

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For this drive to work in your 1.5 Gb/s BUS machine, it will need to be jumpered down.

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http://knowledge.seagate.com/articles/en...

Coaching my father on this now.

Just found this document... we are trying to jumper down and see if it helps. I'm surprised that the drive isn't auto throttling down... but Murphy's law.

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You are most likely experiencing SATA backward compatibility problems. You are trying to run a newer HD on an older system... ''Your new drive is Optimized performance with available 64MB cache and SATA 6Gb/s interface, unfortunately your SATA is V I ( 1.5 Gb/s)''

I didn't delve long and hard into your new HD specifications- but others trying to run new drives with claims of "backward compatibility" have had issues. I don't even know if your HD is supposed to work that slow, but it's certain your box cant work that fast.

If this Answer is helpful please remember to return and mark it Accepted.

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I'm not sure you are looking at the right specifications. Here is a link to the product info: http://www.seagate.com/files/docs/pdf/en...

Our model number is listed as having SATA 3Gb/s, which I thought would be compatible with our machine.

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This hard drive SHOULD be compatible with your iMac assuming you do have a 17" Intel iMac. The early Intel iMacs used the SATA I specification of 1.5Gbit/s. This hard drive shows as using the SATA II specification, which is backwards compatible with the SATA I specification.

With that in mind I would be troubleshooting the component itself. Was the hard drive simply an upgrade or is it to replace a failed/failing hard drive? It's possible that the new hard drive is defective. It would be odd to see that but it is certainly possible.

I would try the following:

  • Reinstall the original hard drive and verify that it shows up in Disk Utility - this will let you know that the SATA cables and connections on the logic board are functioning.
  • Connect the new hard drive to another computer (if available, either by installing or using a SATA to USB/FW adapter) - this will let you know if the new drive is functioning
  • Reinstall the new hard drive and try again
  • With the new hard drive still installed, attempt an SMC reset as well as a PRAM/NVRAM reset

SMC RESET

• Shut down the computer.

• Unplug the computer's power cord and all peripherals.

• Press and hold the power button for 5 seconds.

• Release the power button.

• Attach the computers power cable.

• Press the power button to turn on the computer.

PRAM / NVRAM RESET

• Shut down the computer.

• Locate the following keys on the keyboard: Command, Option, P, and R. You will need to hold these keys down simultaneously in step 4.

• Turn on the computer.

• Press and hold the Command-Option-P-R keys. You must press this key combination before the gray screen appears.

• Hold the keys down until the computer restarts and you hear the startup sound for the third time.

• Release the keys.

Hopefully this either resolves the issue or identifies where the fault is. Good luck!

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