Model A1224 / Mid 2007 and Early 2008 / 2, 2.4, or 2.66 GHz Core 2 Duo processor

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Need help reloading OS on new hard drive

I was given an iMac that needed a new hard drive. I purchased a seagate 1TB drive and followed the installation guide. Now I can't get snow leopard or my gray discs to load at all. Snow leopard starts and then pixelates. I'm basically new to macs so any help would be awesome.


The last four numbers 8ze3

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What are the last four numbers of the device's serial number?


A screen that 'pixelates' may have a graphics board problem.


Old drive worked fine in safe mode, but can't get any OS to load with new drive.


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We really need to know your exact machine and the exact drive you're trying to install. The drive will have to be formatted before a system can be installed. The gray disk may or may not be the right one for your machine. Theres a part number on the disk. See if you can boot from the DVD with the new hard drive disconnected.

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The old drive is a wd 300gb. iMac model is a1224. I read how I needed to insert the disc to access the disk utility to format the drive. I have the original gray discs I believe.


There are 7 different a1224 models. Please give us the last four figures of your serial number located on the bottom of your stand. Also the model number of the Seagate 1 TB Drive you are trying to use. These specifics are needed to give you a correct answer, there are many variables of drives and iMac hard drive requirements that I don't have time nor the inclination to go into all of them. Did the machine boot from the DVD completely? Are sure it is the disk that came with your machine?


Drive model #st1000dm004 last 4 serial #8ze3. Not 100% sure on the discs. No it didn't boot up at all.


Apple iMac "Core 2 Duo" 2.66 20-Inch (Early 2008) Specs

Identifiers: Early 2008 - MB324LL/A - iMac8,1 - A1224 - 2210

Pre-Installed MacOS: X 10.5.2 (9C2028) Maximum MacOS: Current*


Your machine has a Serial SATA BUS Speed of 3Gb/s. Look up your drive to see if it is backward compatible or able to be jumped down. When trying to boot from the DVD are you holding down the "C" key on boot up?


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