


If you have any other partitions, you will have to "uninstall Windows" (i.e. DO NOT pre-partition disk space for Windows and Linux, even if you know how to.If you try to install Windows via any other ways, you will get a GPT error. Installing Windows is easy, via Boot Camp, but this has to be done from inside properly installed macOS only, and latest Windows only (that Boot Camp supports). Installing only one of Windows or Linux is easy, but not both You should consider do everything to make macOS faster, including disabling FileVault. BE WARNED! You are running macOS only low hardware.(Catalina is already latest, Big Sur is beta.) It's too old, therefore no more support.Īfter some hopelessness (because I can no longer boot into anything), I found a solution - How to install macOS Big Sur or Catalina on an older Mac or MacBook. However, I cannot install macOS - reason is internet connection is required, and Apple Inc won't allow it. The first thing I do when I received an old MacBook Pro from my sister, knowing that free Apple support is long gone, I Command+R into Recovery mode, and format the hard disk. My MacBook Pro is too old to reformat, and start from scratch, but there is a way out (Compared to nowadays usual small (but faster SSD) 128GB - too small to dual boot.) Good thing about this, is 500GB is very large. So, I got my hands on an 8-years-old MacBook Pro (mid 2012), with 4GB RAM, 500GB SATA HD, and Core i5 CPU.
