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 ...
The boot drive is the most fundamental of all the drives your PC may use, as it contains the operating system. Whether it's a hard disk drive (HDD) or solid-state drive (SSD), it has everything your ...