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Model A1419 / Late 2012 / 2.9 & 3.2 GHz Core i5 or 3.4 GHz Core i7 Processor, ID iMac13,2

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iMac 2012 Booting to OS X Utilities & Macintosh HD missing

I am having a rather big problem. I have a iMac 2012 with a fusion hard drive.

When I boot up the iMac it plays the chime but then loads straight to OS X Utilities. I am then given the 4 options pictured. I have tried everything.

This problem occured when recently (since Monday after I installed a OS X update) when I have gone to shut down my computer, it closes all open apps but then just sits there, forcing me to press and hold the power button to power off. This was getting annoying so today I decided I would try to restore from a Time Machine back up. I went to restore and it failed. I then went to reinstall OS X and realised that Machintosh HD is no longer even listed. (It is also no longer listed when selecting a drive to restore a time machine back up to).

Weirdly, bootcamp running Windows 8 on the iMac seems to be working fine and I am writting this now on there.

I should add that bootcamp is a partition of my Machintosh HD so it makes me think (and hope) that the Hard Drive is not completely dead?

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Do you have access to a second Mac? If you do you can try restarting your system is Target Mode with a FireWire or Thunderbolt cable connected with the other system. The other alternative here is to create a boot drive using a USB thumb drive using the other system to create it.

After you get your system booted up via Target Mode or via the USB thumb drive you'll need to run Disk Utility to fix your drive. Give that a try first. If that fails you'll need to re-install the OS so you might want to download it from the App Store and copy over the OS installer to your thumb drive.

Given the state of your drive I suspect recovery services (either) would help you here.

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