Help! Unable to boot into Mac after installing Windows 7

Discussion in 'macOS' started by Dataexar, Jan 10, 2012.

  1. Dataexar macrumors newbie

    Jan 7, 2012
    I installed Windows 7 on my 2011 27" iMac (running lion 10.7.2)yesterday, before that, I can boot into Mac OS. I installed Windows 7 on a different volume on the same hard disk as the Mac OS.

    Now when I turn on my computer, white screen appears, then a apple logo with a progress bar. The process bar will only load 20% for while then disappear, a spinning wheel show up (not the rainbow wheel), it just keep spinning :mad:

    I tried resetting the SMC, NVRAM, didn't work. I can't repair the Macintosh HD in disk utility, it saids theres a problem. Help! :confused:


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