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yourmn

macrumors 6502a
Original poster
Jun 28, 2010
537
640
United Kingdom
Hi

I have an iMac which is running the public beta. I have been trying to install Beta 2 since last year with no luck.

The update is showing in System Preferences, however it gets under a quarter of the way downloading and says "An error occurred while downloading the selected updates. Please check your internet connection and try again."

I've tried redownloading profile again and the Big Sur installer opens but this says that Macintosh HD is not mounted?

Any ideas on what I can do?
 
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