16.04 - qemu-system-x86_64 boot failed - Ask Ubuntu


i tried boot ubuntu.iso on qemu-system-x86_64 command "qemu-system-x86_64 -cdrom ubuntu-16.04-desktop-amd64.iso" failed, here warning "tcg doesn't support requested feature: cpuid.01h:ecx.vmx [bit 5]"：

question img1

how solve problem?

you did not specify guest startup ram size -m option, default ram size 128m, insufficient. ubuntu-16.04.2-desktop-amd64.iso, minimum size works -m 277. safe, add -m 512 qemu-system-x86_64 options, should solve problem.


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