The inclusion of "exclusive download upd" in a search query often points toward or fake update notifications . Cybercriminals use these terms to lure users into downloading malicious packages disguised as "updated" system files. kholia/OSX-KVM: Run macOS on QEMU/KVM. With ... - GitHub

Sites like the Internet Archive host historical versions, such as Mac OS X Tiger 10.4.11 PPC, already pre-installed in QCOW2 format for research and emulation.

Projects like the OSX-KVM repository on GitHub provide scripts to fetch official macOS installers directly from Apple and convert them into QCOW2 format for Linux-based virtualization.

QCOW2 (QEMU Copy-On-Write) is a popular disk image format used for running virtual machines. Developers often use it to run macOS on non-Apple hardware via QEMU or KVM for testing and CI/CD pipelines.