How to Get macOS Big Sur as a DMG File

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Some Mac users may be interested in obtaining macOS Big Sur as a DMG file, so that they can use the disk image with a virtual machine, to create bootable media, for archival purposes, for cloning, or any other reason. It turns out that macOS Big Sur is available to download as an installer application, and from that you can build a macOS Big Sur DMG file, and that’s what we’ll show you how to do.


For what it’s worth, if you’re looking to create boot media, it’s probably better to simply make a macOS Big Sur bootable install USB drive using the more…

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