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updated without any problem , still using OpenCore 0.6.6 , no change with USB3 etc.. 

I hope that a strange bug on Safari will disapeer soon  high CPU load at startup, if I select "New windows starts with : start page"  before and after update on my Hack, 280% CPU load. On a Macbook pro 2015 with a core i7-4c it has the same bug, less CPU load (only 3 pages in history on this one).

Screenshot 2021-05-25 at 21.43.57.png

Clean install with OC 0.7.0. Am dual booting Catalina and Big Sur 11.5 and Widows 10 with single EFI attached to Catalina. Erased Big Sur 11.5 using Windows 10 diskpart. I made a usb installer using create install media and without EFI. Attached USB and boot Catalina and start installing Big Sur 11.4. After installation boot Big Sur using boot loader from Catalina without issues.

 

Screen Shot 2021-05-26 at 4.50.26 PM.png

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