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Replaced Hard Drive, now Mac isn't finding it!

I recently replaced my old hard drive with a new one and now I am trying to load the OS X on from the install disk but the hard drive isn't showing up. I'm not sure what I'm doing wrong. I've check multiple times to make sure that I installed the hard drive correctly and everything seems fine, but it still doesn't show up when I boot up the computer.

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What kind of drive is it? Where did it come from? How do know the drive is good? Re-check your cable connection to the drive. What happened to the old drive and was it working?

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It's a 320 GB 5400 RPM Western Digital SATA that I bought here on iFixit. The old drive went out. I guess the new drive is good but I don't really know for sure. I'll recheck that cable connection for the drive.

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Are you sure it isn't a 320 Seagate?

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No. It's the one ifixit recommended. Does it need to be a 320 seagate?

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No, I just didn't see a 320GB WD in iFixit's part list.

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Boot from the OSX install disk.Go to the second page. Pull down menu - Utilities - Disk Utility

Then format the drive. Now do the installation.

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I've tried that. The drive doesn't show up in the disk utility either and all the options are grayed out.

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Try running the "Verify Disk" option. If this gives you an error, then there might be a problem with the disk.

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Chris, you can't verify what you can't see.

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Do you have an external enclosure or adapter to test the drive out in?

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I would try to re-seat the drive in the bay. Make sure its pushed all the way back. If that doesn't work then...

I have had some issues with new drives not being recognized by macs. If that happens I usually throw them in a linux box and dd zero the drive out. (I guess osx is unix so it should have the dd command) I then either leave it unformatted or format it to fat32 or something. Most of the time the mac will pick it up at that point and I am able to format it in HFS+.

I would also check the SMART status and see if that has any errors, might be DOA drive.

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