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An unrepairable disk error requires an Erase/Install of OS X. It may not cause issues right away, so get the files transferred now. In fact it may fail to even boot up. The previously mentioned shift key at boot (Safe Mode) worked. I just used Disk Utility to BACK UP the entire hard drive to a properly setup USB. That will repair the installed OS X ...


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Try the following steps and I am sure it will be fixed. Clean the SuperDrive’s slot with compressed gas/vacuum cleaner. Reset the NVRAM/PRAM and SMC Reset NVRAM and PRAM: Shut down the computer. Holding down the Command (Apple), Option, P, and R and then hold the Power button simultaneously, 3 times and wait for 3 loud chimes. Delete the Finder’s ...


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dd variant not work for me. So, i find another one with poweriso: http://www.poweriso.com/download.php Use: ./poweriso convert ~/Desktop/image.nrg -o ~/Desktop/image.iso -ot iso



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