Because you are using -vga cirrus or standard VGA, the composition will be rendered entirely via software emulation. It will be slow, but it provides a pristine look at what Microsoft intended for the future of computing before they hit the reset button.
Many pre-made Longhorn images online are in (VMware) or VDI (VirtualBox) format. You can convert them to qcow2 to benefit from KVM snapshot performance. windows longhorn qcow2 work
qemu-system-x86_64 -rtc base=2005-04-01T12:00:00 ... Because you are using -vga cirrus or standard
While QEMU is a powerful and free option, you might find other virtualization software provides a more stable or feature-rich experience. Consider VMware Workstation Player (free for personal use) or VirtualBox (open-source). These often have better hardware compatibility and more intuitive interfaces for managing VMs. For instance, setting compatibility mode to VMware 7.x can resolve specific Longhorn issues. You can convert them to qcow2 to benefit
). Other modern adapters often cause the installer to display garbled graphics or crash. : Almost all Longhorn builds have an expiration date. You
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qemu-img convert -f vmdk longhorn.vmdk -O qcow2 longhorn.qcow2