missing operating system

Stop vm 105, edit /etc/pve/qemu_server/105.conf as you may have vm-105-disk-1 activ now instead of ...disk-0, start vm.
 
Stop vm 105, edit /etc/pve/qemu_server/105.conf as you may have vm-105-disk-1 activ now instead of ...disk-0, start vm.
ok how can i modify ?
(I apologize if I'm bothering you but these are the very first times I've approached virtualization and importing)