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I am trying to put Ubuntu on my aging Macbook, as my optical drive is dead, I am following this guide to do so via USB.

The process seems to go fine in the terminal, but when I boot I only get a single option from the operating system selector on boot, and when OsX restarts the USB disk is declares as 'not readable by this system'


Machine : Macbook 21.Ghz Intel Core 2 Duo build 10K549 Os : Snow Leopard 10.6.8

USB Drive is made using Ubuntu 11.10 Desktop i386 

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