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During the installation of Big Sur on my 2020 iMac comes up with internet connection required at 12min every time I try and install the update, and it stops every time without installing. I have tried with wifi and cable and the same thing happens! I am on OS 10.15.7 and a good broadband speed.
iMac 27″, macOS 10.13
Boot into Safe Mode by booting with the Shift key held down and try installing Big Sur from there.
NOTE: Safe Mode boot can take up to 10 minutes as it's doing the following;
• Verifies your startup disk and attempts to repair directory issues, if needed
• Loads only required kernel extensions (prevents 3rd party kernel/extensions from loading)
• Prevents Startup Items and Login Items from opening automatically
• Disables user-installed fonts
• Deletes font caches, kernel cache, and other system cache files
Boot into Safe Mode by booting with the Shift key held down and try installing Big Sur from there.
NOTE: Safe Mode boot can take up to 10 minutes as it's doing the following;
• Verifies your startup disk and attempts to repair directory issues, if needed
• Loads only required kernel extensions (prevents 3rd party kernel/extensions from loading)
• Prevents Startup Items and Login Items from opening automatically
• Disables user-installed fonts
• Deletes font caches, kernel cache, and other system cache files
Big Sur Installation Problems
