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I've used two different programmes for creating a flash drive I can boot from, but each time I get the same message after choosing to boot Ubuntu that says that a certain file is missing or corrupted:

file: \ubuntu\winboot\wubildr.mbr
status: 0xc000007b

I'm running the x64 version of Windows 8 on a laptop I got not three months ago.

Any suggestions as to what to do?

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How can I fix ubuntu winboot wubildr.mbr missing error? shows this involves the WUBI install of Ubuntu, but that won't boot from a flash drive. Suggest you create a non-WUBi version instead.

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