You’re only option would be to reinstall Windows in UEFI mode or install macOS first. Verify your Disk is GPT partitioned and has an EFI system partition. If the drive is formatted as MBR you are out of luck and can’t follow this guide.Install MiniTool Partition Wizard Free Edition.I may, eventually, see if qemu is faster, but that's even more arcane, so it's not likely in the short term. In short, it does so much of what I need it to do that the commercial competitors don't have an appeal for me. I sometimes wonder if VMWare Fusion would be worth it, for the raw device support, etc., but I understand that it can be configured in VirtualBox, with patience and Terminal-fu.
For free (I, too, was tired of the "subscription model" annual upgrade pleas/threats), I really have to try to find a problem with it. Parallels seems to virtualize Mac OS more smoothly. It works well with most Linuxes I throw at it (have had some issues with Linux Mint and video drivers). I triple boot on my MacBook, but may toss that for using virtualized PCs. Two-way clipboard support just works, and the granular control over the emulated hardware (how many cores, how much RAM, what size drive, etc.) makes it sweet for testing system parameters. It's not quite as nice to configure as Parallels, but once it's running it's fantastic. What can be said has mostly been said, but I'll chime in.
Linux Guest Additions: Allow running only one VBoxDRMClient instance.Shared Clipboard: Improved communication between guest and host when guest has no clipboard data to report.Linux host and guest: Introduced initial support for kernel 5.16.Linux host: For all distribution specific packages (deb/rpm format) fix the packaging so that the feature for unattended installation of guest OSes works.macOS host: show message indicating the unsupported CPU on M1 based Macs and abort installation.macOS host: fix multiple bugs specific to macOS Monterey in installer and startup of kernel extensions.vboximg-mount: Error message if no image is specified.VBoxManage: Fixed incorrect help text for "hostonlyif".VBoxHeadless: Fixed crash when running on macOS Monterey.DVD: Fixed drive lock handling across VM reset.Host-only networking: Fixed crash parsing /etc/vbox/nf.
GUI: Non critical media related errors should not cause modal pop-up error messages.GUI: Fixed settings check on machines not supporting hardware virtualization.GUI: Fixed bug on X11 with drag and drop initiated on single mouse click in VM storage settings.GUI: Fixed bug on Windows with inability to save taken screenshot under a folder with native name.GUI: Fixed crash on macOS Big Sur while browsing for an external image from First Run wizard.GUI: Fixed inability to complete First Run wizard after browsing for an external image.
Not only is VirtualBox an extremely feature rich, high performance product for enterprise customers, it is also the only professional solution that is freely available as Open Source Software under the terms of the GNU General Public License (GPL). VirtualBox is a family of powerful x86 virtualization products for enterprise as well as home use.