Solved Replaced Hard Drive But It Isn T Recognised Macbook Pro 15 Core 2 Duo Model A1211

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I’ve replaced the original hard drive with a Seagate - Momentus 7200.4 ST9320423AS - Hard drive - 320 GB - internal - 2.5’’ - SATA-300 - 7200 rpm

• but no hard drive is showing on the screen when I try to install Snow Leopard. Have I made a dreadful mistake and bought an incompatible hard drive? Or am I doing something wrong re. formatting the new hard drive? I’ve put the original HD back in again to check that the laptop is not irretrievably broken, and that still works OK.

Start up from your system installation disk by inserting the disk and holding down the “C” key on start up. Go to the second screen pull down menu to Utilities > Disk Utility. Select the drive on the left and format it Mac OS Extended. Quit Disk Utilities and continue with the system installation.

Hello there, there is nothing wrong with partitions if you will be running another operating system along side what have. Otherwise another partition would really not be necessary unless you just feel better by simply just having one, it’s the same hard drive regardless.