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macOS Big Sur system requirementsĪs we noted in our dedicated article which lists the official system requirements for macOS 11.0 Big Sur, the operating system is supported on these Mac models: The Terminal command that we’re going to use assumes that the macOS beta or public beta installer resides in the Applications folder and “Untitled” is the name of the USB drive or other external disk you’ll be using as your bootable installer.ĭo keep those two things in mind before you decide to move the macOS beta or public beta installer out of the Applications folder or rename your external drive.

The macOS beta or public beta installer inside your Applications folder.

Your disk must be named “Untitled” and formatted with the “Mac OS Extended” option.

A USB thumb drive or external disk with at least twelve gigabytes of available storage.

A compatible Mac computer with macOS Catalina.

Prerequisitesīefore proceeding with the creation of your bootable installer for the macOS Big Sure beta or public beta, here’s a quick checklist of the things you’ll need: Nevertheless, it’s helpful to have it handy for troubleshooting purposes and when installing the macOS Big Sure beta or public beta on multiple Mac computers without having to download the installer each time. You don’t need a bootable installer if you want to upgrade the current macOS on your startup disk to the Big Sur beta or public beta on a single machine. You can easily use your USB installer as a startup disk from which you can boot your computer in order to install the Big Sur beta or public beta.

Having a dedicated macOS Big Sur beta installer on a USB thumb drive is a great option for people who have multiple Macs that they wish to upgrade to the macOS Big Sur beta. 3.2) Changing Secure Boot settings Why do I need a bootable installer?