The "Bootable" legacy ISO you've used is in fact not bootable, it relies on CDROM emulation provided by BIOS. VMs don't usually do this sort of emulation. If you set the guest OS to something like ...

If you had upgraded Windows 8 using the Windows8-Setup.exe executable, rather than through a DVD, it can be difficult to troubleshoot your computer in the event that it is not starting properly or you ...

How do I create a snow leopard usb boot or dvd disk while running Sonoma on a Mac Studio Pro? I want to install Snow Leopard on an old Macpro 5,1 but I don’t have a boot disk or sub stick. I got Snow ...