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The 2012 Mac Mini Server remains a popular choice for Proxmox Virtual Environment (PVE) installations. This model stands out for its upgradeability: it allows for both memory and storage upgrades, making it particularly versatile. It’s also the last Mac Mini model with this flexibility, as the 2014 model saw soldered RAM, limited CPU performance, and eventually, Apple’s transition to ARM architecture in later versions, which limits virtualization capabilities.

Creating a macOS USB Installer can be more challenging than its Windows counterpart, particularly when dealing with older macOS versions on the latest systems. For instance, I faced difficulties while attempting to reinstall macOS 10.7 Lion on a Mac Pro 2012 using a MacBook Air with an M1 chip and the latest macOS. This article aims to document the solutions I found for these challenges, which may help others facing similar issues.