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 ...

A tiny multi boot USB setup that holds dozens of ISOs for live tools and installers, ready to revive any PC.

The virtual machine may fail to boot from an ISO because the boot order prioritizes the virtual hard disk over the optical drive, resulting in a “No bootable medium ...

My googlefu has failed me. We have a USB key that we need to use to print cheques, as it contains data to allow the checking printing software to print. The user's environment has been virtualized to ...

You’ve downloaded an ISO recovery disc, maybe used it to create a bootable USB key -- but does it work? Finding out can be a hassle as you close down applications ...