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When I tried to install Windows on my iMac I must have have formatted the wrong disk. Now when start I get no bootable device - insert boot disk and press any key. Any suggestions!

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Have you tried installing Windows again with the DVD ? (Boot on the DVD w/ option key at the chime) – Matthieu Riegler Mar 16 '13 at 3:30
Just to clarify, your Mac doesn't boot at all, not even OS X? – jaume Mar 18 '13 at 21:13

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