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The Startup disk utility in Mojave (10.14.6) doesn't recognise my Big Sur system and so I can't swap back to Big Sur. I used to use Startup Disk utility to swap between Catalina and Mojave all the time. There's an error message "incompatible disk - this disk uses features that are not support on this version of macOS". How can I go from Mojave to Big Sur? Thanks
iMac 27″ 5K, macOS 10.14
Option-boot works for me and in fact I haven't even tried to use the Mojave Startup Disk CP for this.
But I did notice that Mojave does not properly recognize the Big Sur "update" volume (I guess it is used for Big Sur updates when merging the old and updated system volumes?).
Option-boot works for me and in fact I haven't even tried to use the Mojave Startup Disk CP for this.
But I did notice that Mojave does not properly recognize the Big Sur "update" volume (I guess it is used for Big Sur updates when merging the old and updated system volumes?).
Try holding the Option key while starting or restarting.
Thanks I will try this.
You're welcome.
Thanks - this worked. For some reason I'd never used Option boot before as I hadn't needed it. Cheers!
You're welcome.
Thanks Matti, much appreciated.
Mojave doesn't recognise Big Sur partition
