Catalina on Virtualbox installation

cf: https://techsviewer.com/install-macos-10-15-catalina-on-virtualbox-on-windows-pc/

These codes are critical. Issue  these lines in user account (chiao) not sudo.

Code for VirtualBox (New): 
Note: replace "Your VM Name" in this commands line with your Virtual Machine Name in step 3, then type in the following code:

• cd "C:\Program Files\Oracle\VirtualBox\"
• VBoxManage modifyvm "Your VM Name" --cpuidset 00000001 000106e5 00100800 0098e3fd bfebfbff
• VBoxManage setextradata "Your VM Name" "VBoxInternal/Devices/efi/0/Config/DmiSystemProduct" "iMac11,3"
• VBoxManage setextradata "Your VM Name" "VBoxInternal/Devices/efi/0/Config/DmiSystemVersion" "1.0"
• VBoxManage setextradata "Your VM Name" "VBoxInternal/Devices/efi/0/Config/DmiBoardProduct" "Iloveapple"
• VBoxManage setextradata "Your VM Name" "VBoxInternal/Devices/smc/0/Config/DeviceKey" "ourhardworkbythesewordsguardedpleasedontsteal(c)AppleComputerInc"
• VBoxManage setextradata "Your VM Name" "VBoxInternal/Devices/smc/0/Config/GetKeyFromRealSMC" 1

Change the screen size (e.g. 1440x900):
VBoxManage setextradata  "Your VM Name" VBoxInternal2/EfiGraphicsResolution 1440x900