In the following video, I'll show you how to replace the hard drive in a MacBook Pro A1278, changing the mechanical HDD to a solid-state drive (SSD). I'll also show you how to install the correct operating system version and how to create a bootable USB drive from Windows, which can be more convenient. Subscribe and like! ;)
Which version to use: https://www.aiho.es/blog/25_con-que-m...
Mac OS 10.15 Catalina ISO (credits to the link owner)
https://www.mediafire.com/file/443aka...
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