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Reply to Parallels 15 (Mac): Updating macOS Catalina Beta to Big Sur Beta
Here are the solutions for all problems, Before creating Catalina VM don't forget to resize disk size to 80 GB (at least) Format 80 GB disc with using APF format before starting Catalina installation (otherwise you cant use 80 GB) After Catalina VM installation start necessary update from Software Update, version will be 10.15.5 Copy "Install macOS Beta" (9 GB SUR installation file) to the Applications Create 2nd Admin user and leave password blank (you will use it while login to SUR) Don't install Parallels Tools Copy current Catalina VM to external disk as a backup Complete below process (run Terminal on the real MAC not VM) a. On a real, supported Mac, run this command in Terminal: Code Block ioreg -l | grep board-id b. Make a note of the board ID (mine is Mac-551B86E5744E2388, for example) c. Run this command in Terminal: Code Block sysctl hw.model d. Make a note of the hardware model (mine is MacBookPro14,3) e. In the VM configuration, under Hardware -> Boot Order -> Advanced Settings -> Boot flags, enter the following (inserting the information noted above where shown): Code Block devices.machwmodel="<model>"devices.smbios.boardid="<board ID>" at the end of this process, You will get two lines like below, devices.machwmodel=MacBookPro13,4 devices.smbios.boardid=Mac-53FDB3D8DB9CA971 Shotdown the Catalina VM and put above two lines to the In the VM configuration, under Hardware -> Boot Order -> Advanced Settings -> Boot flags Start Catalina VM again login with standart user (not login with the new created account) Run "Install macOS Beta" from applications (copied SUR Installation file) Wait approximately 45 mins. login with new account Thats all Note: In this method you don't need to login apple developer site for verification etc.
Jun ’20