Will not boot from external CD drive

[Tony M.]

I have an Acer Aspire one netbook. I am trying to get it to boot from an external USB CD drive. I changed the boot order but it doesn't see it. I press the F12 key during boot but the drive isn't listed. My external drive has 2 USB plugs. One for power & one for data. How do I get this thing to boot from an external drive?

 

[Tmagic650]

Try another USB external optical drive