I purchased a used 2018 Mac mini desktop and wanted to put a fresh installation of the latest macOS 10.15 Catalina on it. Below are the steps I took. Note: The instructions below are the same for macOS 10.13 High Sierra and macOS 10.14 Mojave. Download macOS Catalina You will…
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To perform a clean installation of macOS Sierra (basically, Mac OS X 10.12), I recommend using a bootable USB flash drive containing the macOS Sierra installer. Below are the steps I took to create the bootable USB flash drive and how I used it to install macOS Sierra. Note: The…
Leave a CommentThe instructions below will create a bootable system partition on a USB flash drive, which is exactly the same as creating such a partition on a hard drive. Specifically, I will be using Windows 7’s built-in DiskPart (Disk Partition) command-line utility to create a bootable USB flash drive containing a…
2 CommentsUpdate: Go to Install macOS Sierra Using Bootable USB Flash Drive if you want to install macOS 10.12 Sierra instead. Update 2: The instructions below will work to manually create a Mac OS X 10.11 El Capitan USB installation drive. I needed to upgrade my sister’s 2008 Macbook Pro and…
Leave a CommentUpdate: Go to Bootable USB Flash Drive to Install Mac OS X 10.10 Yosemite if you want to install Mac OS X 10.9 Mavericks or Mac OS X 10.10 Yosemite instead. The instructions below will not work for Mac OS X 10.7 Lion or later versions. I thought it would…
16 CommentsNote: I have also used the WinToFlash tool to successfully make a bootable USB Windows 7 installer, both 32bit and 64bit versions. My sister asked me to fix her Compaq Windows XP laptop. I found that the Windows XP Home installation on it was in a weird state. On bootup,…
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