Windows Longhorn Qcow2 Work [NEWEST | 2024]

This guide is your definitive "work log" for getting Windows Longhorn (specifically Build 4074, the most "complete" pre-reset build) into a functional, usable qcow2 virtual machine. Before touching the command line, you must understand the enemy: Hardware Abstraction Layer (HAL) incompatibility .

qemu-img snapshot -l windows_longhorn_build4074.qcow2 windows longhorn qcow2 work

sudo apt update && sudo apt install qemu-kvm libvirt-daemon-system virt-manager bridge-utils -y We want a raw-ish feel but with snapshot capabilities. Do not use raw. Do not use vmdk. Qcow2 is ideal because Longhorn will crash often. With qcow2, you can instantly roll back. This guide is your definitive "work log" for

| Error Screen | QEMU Fix | Qcow2 Fix | | :--- | :--- | :--- | | 0x7B (inaccessible boot device) | Add if=ide to drive param | Recreate qcow2; do not use virtio-blk | | 0x50 (page fault) during boot | Reduce RAM to 1024MB ( -m 1024 ) | Snapshot restore; corrupt paging file | | Stuck at "Please Wait" (blue bar) | Add -no-hpet -no-acpi | Delete qcow2 and recreate; bad cluster align | | Sidebar renders black | Add -cpu ... -hypervisor flag | Already fixed; rebuild snapshot | Many pre-made Longhorn images online are in VMDK (VMware) or VDI (VirtualBox) format. You can convert them to qcow2 to benefit from KVM snapshot performance. Do not use raw

Date: October 26, 2023 Topic: Virtualization, OS Archaeology, Linux KVM

Experiment with Longhorn Build 5048 (post-reset). It requires a completely different qcow2 configuration: SATA, dual-core, and ignoring the -hypervisor flag. That is a battle for another day. For more beta OS preservation techniques, follow my series on "Obscure VMs in Qcow2." Next: Running Chicago Build 58s on a Raspberry Pi with KVM.