# Running a MacOS Big Sur VM in ProxMox VE

1. Download a MacOS Big Sur .iso Download
2. Download KVM OpenCore bootloader Download
3. Extract the downloaded KVM OpenCore bootloader .gz file
4. Upload the Big Sur and KVM OpenCore .iso files to the Proxmox ISO library
5. Log into the ProxMox web UI
6. Right click the ProxMox node name > Create VM
7. Type MacOSBigSur in the name field, set the VM ID to 1100 (unless 1100 is in use) > Next
8. On the OS tab, set the Type field to Other and select the KVM OpenCore .iso in the ISO Image field > Next
9. On the System tab, set the Graphic card field to VMware compatible, BIOS field to OVMF (UEFI), Check the Add EFI Disk checkbox, Uncheck the Pre-Enroll Keys checkbox, Machine field to q35 and the SCSI Controller to VirtIO SCSI > Next
10. On the Hard Disk tab, set the Bus/Device field to VirtIO Block, Disk size field to 64, Cache field to Write back (unsafe) > Next
11. On the CPU tab, set Cores field to 4, Type field to Penryn > Next
12. On the Memory tab, set the Memory to 4096 > Next
13. On the Network tab, set the Model field to VMware vmxnet3 > Next
14. Verify the summary and click Finish
15. Click the MacOSBigSur VM > Select Hardware from the left sub-navigation menu
16. Click Add > CD/DVD Drive
17. Select the MacOS Big Sur .iso downloaded earlier > Click Create
18. Select the MacOSBigSur VM > Options > Boot Order
19. Set the KVM OpenCore disk as the first boot option > Click OK
20. Right click the ProxMox node name > Console
21. Run the following commands in the terminal
    # edit the VM conf file, change 1100 to the VM ID for the Big Sur VM
    nano /etc/pve/qemu-server/1100.conf
22. If running on an Intel CPU, add the following line to the bottom of the .conf file:

    args: -device isa-applesmc,osk="ourhardworkbythesewordsguardedpleasedontsteal(c)AppleComputerInc" -smbios type=2 -device usb-kbd,bus=ehci.0,port=2 -cpu host,kvm=on,vendor=GenuineIntel,+kvm_pv_unhalt,+kvm_pv_eoi,+hypervisor,+invtsc

23. If running on an AMD CPU, add the following line to the bottom of the .conf file:

    args: -device isa-applesmc,osk="ourhardworkbythesewordsguardedpleasedontsteal(c)AppleComputerInc" -smbios type=2 -device usb-kbd,bus=ehci.0,port=2 -cpu Penryn,kvm=on,vendor=GenuineIntel,+kvm_pv_unhalt,+kvm_pv_eoi,+hypervisor,+invtsc,+pcid,+ssse3,+sse4.2,+popcnt,+avx,+avx2,+aes,+fma,+fma4,+bmi1,+bmi2,+xsave,+xsaveopt,check

24. Press CTRL+W and search for ,media=cdrom
25. Delete the ,media=cdrom from the two attached .iso files (KVM OpenCore and Big Sur) and add cache=unsafe
26. Press CTRL+O, Enter, CTRL+X to write the changes to the conf file
27. Back in the Proxmox web UI, right click the MacOSBigSur VM in the left navigation pane > Start
28. Click console in the left sub-navigation menu
29. At the OpenCore menu, select UEFI Shell > Press Enter
30. Type the following in the UEFI shell:
    # change to the Big Sur .iso, the disk number may be different for you
    fs0:
    # launch the MacOS installer
    System\Library\CoreServices\boot.efi
31. After a long initialization sequence the MAC OS Setup should start
32. Select Disk Utility
33. Select the VIRTIO Block Media > Click Erase
34. Name the drive OS11 > Set the Format to APFS > Click Erase
35. Click Done > Close Disk Utility
36. Click Install macOS Big Sur
37. Click Continue > Click Agree > Click Agree again
38. Select the OS11 disk > Click Install
39. Wait while Mac OS 11 installs files, the VM will reboot several times
40. Press Enter at the OpenCore boot screen after each reboot to continue the MacOS installation
41. Select your Country > Click Continue
42. Confirm your languages and keyboard layout > Click Continue
43. Click Not Now on the Accessibility screen
44. Click Continue on the Data & Privacy screen
45. Select Not Now on the Migration Assistant screen
46. Select Set Up Later and then Skip on the Apple ID screen
47. Click Agree > Agree again
48. Enter a name, user name, password > Click Continue
49. Click Customize Settings
50. Click Continue > Select Use or Don't Use for Location Services
51. Pick a timezone > Click Continue
52. Choose whether to share analytics with Apple > Click Continue
53. Click Set Up Later on the Screen Time screen
54. Uncheck the Enable Ask Siri box > Click Continue
55. Pick a theme > Click Continue
56. Welcome to MacOS 11 Big Sur