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upgrading os

  1. S

    Restore and upgrading OS issues after replacing hard drive

    Hi I'm new to the forum, not exactly a techie, so forgive me for my ignorance here. I have a late 2015 27" 4 Ghz Intel Corei i7 iMac, with 32Gb Ram with a 2TB Fusion Drive. My hard drive was making very strange noises, so I created a partition on my 8GB external drive (Western Digital 8GB)...