Os x 10.10.1 makes my imac freeze

When I try to install the 10.10.1 update on my imac it makes the computer freeze.
I restart the computer to install the update. A filler bar appears, and it starts to install the update. But when the filler bar is about a quarter full, it disappears and leaves a grey screen where nothing happens, no matter how long I wait. I have tried several times. Finally I had to re-install all the content on my mac from timemachine, and now I don´t dare to install 10.10.1 again. What is wrong?

Perhaps a corrupt download. If you want to try again, try here.
10.10.1 Update

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I'm pulling my hair out because I use my Imac for all my work. Everyday I hold down the reset button *at least 5 times* because the Imac freezes.
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+Won't allow me to repair disk+
It is a different procedure from repairing permissions, which was not the problem, but which you did correctly perform. You can only repair disk using Disk Utility on another volume, not from the same volume, and the other volume must be the same version of OS X.
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Then quit and restart, don't continue further into the install process. Eject the Install Disc.
If your OS X is now Leopard or SL, make sure that you use the same disc that installed your current OS X.
Message was edited by: myhighway

Os x 10.10.1 makes my imac freeze

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