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Operating Systems OS X (Apple) Can I erase and start my mac with unix command Post 302532226 by kalak on Monday 20th of June 2011 09:39:30 AM
Old 06-20-2011
If it's your disc that came with your mac, then both the "c" and the "option" key should allow start it up from the disc, so something it wrong with either your drive or your disc. You can try this Resolve startup issues and perform disk maintenance with Disk Utility and fsck
 

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