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Old hard drive slowed down over time and broke so I bought a Kingston 480gb SSD and installed it and used internet recovery to reinstall mac OS however when I went to format the SSD it would not show up in the list of drives. I went into terminal and did “diskutil list" and it did not show up there either. I plugged the SSD into a windows PC and formatted it to NTFS because the format was set at “RAW". I installed the SSD into my Mac and did the internet recovery again and the drive still won’t show up again. Please respond urgently as I need my computer for school

A classic case off a bad SATA cable! Here’s the needed part MacBook Pro 13" Unibody (Mid 2012) Hard Drive Cable and here’s the guide to put it in MacBook Pro 13" Unibody Mid 2012 Hard Drive Cable Replacement You have a Triple whammy here! First the original cable Apple had in these systems was only rated for SATA II (3.0 Gb/s) as that is what Apple was using back then a SATA II HDD. At the very end of the model run Apple did finally installed a SATA III (6.0 Gb/s) cable as they had to go to to SATA III HDD’s as their supplier discontinued the slower drive! Your new SSD pushes more data through the cable than what it can handle. Second: is the rough aluminum case tends to damage the cable over time as it rubs across the surface. To help prevent this place a strip of electricians tape on the uppercase where the cable rests to help isolate it from the abrasion Your Hard Drive Cable Is A Ticking Time Bomb Third: Is our own doing! When we install the cable we can damage it! This gets into how we bend the cable to get around the bends it needs to travel. We don’t want sharp folds! We need smooth radiuses! The best way to bend the arc is to use a BIC pen (or other cheap ballpoint pen) ink straw to help you roll the bend the cable, it has the correct radius.