

If you mount a bootable iso before you start your virtual machine, you will be successful booting up the system. It is in such cases that However, just as how you may need the CD to boot into the machine to Yes, you can as the os has already been installed and there is no need for iso. I went back and deleted the VM and created a new VM, and the ISO won't boot in EFI mode, if I try something like a Devuan ISO in EFI mode, it boots, so there is clearly something with with the ISO I made or as one pointed out earlier in the post, the stock efiboot.

2563 VirtualBox doesn't point to an operating system, either a mounted iso or a virtual hard disk with a bootable OS. Desktop (please complete the following So, instead of booting a distro from a CD or DVD drive, you will have to tell Virtualbox to boot from a virtual disk file or ISO.
KALI LINUX USB 3.0 WONT BOOT WINDOWS 10
an actual Windows 10 ISO) and set the optical device as first option in the boot priority, the machine still boots the installed Windows 10 from hard disk. Finally, click Start button to boot the virtual machine with the ISO image file. Obviously the boot order is without any effect. Why not map the ISO file as a CD in VB and boot from it? I tried, both using a Windows host and an Ubuntu host. If possible, you should download ISO files and use them instead of fiddling with USB drives. Getting Persistence to work in VirtualBox (Windows) At first the USB flash drive might not work exactly like it does when booted natively.
