Latest Windows versions place the recovery partition after the main partition which prevents disk resizing in guest installations. Her how to delete the partition:
Open PowerShell in Administrative Mode and execute:
diskpart
list volumes
select volume <number of volume>
delete volume override
Simply use the MACOSX_DEPLOYMENT_TARGET environment variable:
$ export MACOSX_DEPLOYMENT_TARGET=10.10
Here a list of macos versions:
Snow Leopard (10.6)
Lion (10.7)
Mountain Lion (10.8)
Mavericks (10.9)
Yosemite (10.10)
El Capitan (10.11)
Sierra (10.12)
High Sierra (10.13)
Mojave (10.14)
Catalina (10.15)
Big Sur (11)
Monterey (12)
Ventura (13)
Sonoma (14)
Sequoia (15)
First you need an ISO file of the macOS installation DMG. Either download that file from the internet (please be advised to use safe sources) or you follow a tutorial to convert the DMG to an ISO. A tutorial is given here:
https://www.xda-developers.com/how-install-macos-virtualbox
Simply install macOS by adding a virtual machine an selecting the ISO and system as macOS. After the VM was added, change the config as follows:
Please note that you may need to set the CPU count to 1 for correct installation, otherwise kernel panics can happen! Also set your USB controller to USB 3.0 in case the mac installer asks you for a mouse or keyboard.
Last steps, you need to execute special config commands in terminal:
$ VBoxManage modifyvm "VM_NAME" --cpuidset 00000001 000106e5 00100800 0098e3fd bfebfbff $ VBoxManage setextradata "VM_NAME" "VBoxInternal/Devices/efi/0/Config/DmiSystemProduct" "iMac11,3" $ VBoxManage setextradata "VM_NAME" "VBoxInternal/Devices/efi/0/Config/DmiSystemVersion" "1.0" $ VBoxManage setextradata "VM_NAME" "VBoxInternal/Devices/efi/0/Config/DmiBoardProduct" "Iloveapple" $ VBoxManage setextradata "VM_NAME" "VBoxInternal/Devices/smc/0/Config/DeviceKey" "ourhardworkbythesewordsguardedpleasedontsteal(c)AppleComputerInc" $ VBoxManage setextradata "VM_NAME" "VBoxInternal/Devices/smc/0/Config/GetKeyFromRealSMC" 1