Can you install macOS Sonoma on an external SSD for an Apple silicon Mac running Sequoia 15.3.2? So far this has defeated two of us on many attempts. With useful tips that should have brought success.
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From Installer packages and metapackages, to the first for Big Sur with its new boot volume group. RSRs and their demise, and when an upgrade is an update.
Installing and maintaining Mac OS 9.1 was a complex process that could easily occupy you for several hours getting all its components right.
Recovery reinstall, using an Installer app, or a bootable installer, or with an Apple silicon Mac in DFU mode? What the choices are, and how best to do it.
If you normally ‘clean’ install a new version of macOS, how can or should you do that with Sonoma or another recent version on a modern Mac?
Complete step-by-step instructions for installing a new copy of macOS to an external disk, making it bootable. For Intel and M1 Macs of all flavours.
Why would you want to go to the lengths of erasing your startup disk and installing a macOS upgrade clean? Here’s why, and how to do it.
Install macOS in Recovery can only install one version, which probably isn’t the one you want. How can you get an earlier version installed, then?
Snapshots are designed to make it easy to roll back to a previous state. Why then can’t you use a snapshot to roll back to an earlier version of Big Sur?
For some, inability to clone to the internal SSD of an M1 Mac seems disastrous. In reality, it could achieve little, and there are better solutions.
The Eclectic Light Company 