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I recently downloaded Ubuntu 13.10 and am trying to install it on a external hard drive. When I do install it and try to run it on my computer on start up it gets either ignored or if it recognizes the OS it allows me to boot to it only to give me a ubuntu\winboot\wubildr.mbr error. I entered the BIOS and changed it to legacy mode and then I had an error that said, Operating System not Found. I returned the BIOS settings to what they were before. I have tried several solutions, like using Universal USB installer but it did not do what I wanted it to do. How do I install and boot a proper Ubuntu copy that I can boot from, I don't know if my download of Ubuntu is corrupted but I am working on the assumption that it is not.

I am using a Sony VAIO SVE14A35CXH, running windows 8. The external is a western digital 500 gb hard drive in a USB 3.0 case.

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