I am running Ubuntu 16.04 on a laptop. I installed Virtual Machine Manager. How do I get a VM running for the first time?
I downloaded two different ISOs. I tried to create a VM with Virtual Machine Manager using each one. But the problem with each one was that they would not boot up. I would get
Booting from Hard Disk... Boot failed: not a bootable disk. No bootable device.
I have used .ISOs from trustworthy sources. One .iso was for QemuEmulator (https://help.ubuntu.com/community/Installation/QemuEmulator). Another .iso was to install Ubuntu directly on to a normal laptop. I used Virtual Machine Manager's GUI. I chose mostly the defaults or used articles I found online to create the VM. I had to do some troubleshooting just to see some output.
I tried using the virt-install command from a character prompt. But I had no luck there either. I tried using this command:
virt-install --connect qemu:///system --ram 512 -n foobar --os-type=linux --os-variant=debian8 --disk path=/root/debianfb.qcow2,device=virtio,format=qcow2 --vcpus=1 --graphics spice --noautoconsole --import --disk size=20
I tried variations of the above command. The results would show an error about the disk size must be specified for a non existent volume. debianfb.qcow2 is a non-existent volume. I thought this character-based way of creating VMs could borrow from the host OS. But I do not know the proper syntax to get it working. I am open to using either the GUI Virtual Machine Manager or a character prompt command like virt-install. What should I do?
I have not tried downloading a .qcow2 file. How would I know it is from a trustworthy source? I just want a basic VM on my Linux Mint laptop using KVM or QEMU.