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Model A1312 / Mid 2010 / 3.2 GHz Core i3 or 2.8 & 3.6 GHz Core i5 or 2.93 GHz Core i7, ID iMac11,3

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Kernel Panic After Installing Seagate Hybrid 2TB HD

Hi iFIxit Community,

I recently replaced in an iMac a 2TB Hybrid Seagate Drive. I then proceeded to reload the OS and then transfer info from the old drive. After those steps were completed I logged in to find the iMac hangs after about 5-10 minutes and then goes to the white screen that says your computer restarted because of a problem, please press anykey to continue or wait a few seconds. I have reset the PRAM (Control Option P R). To load the new OS I used the internet boot because I don't have an install disk, the new OS is 10.9.4.

One thing that was different about my replacement than the guide was that the HD thermal sensor cable could not be attached to the new HD, I left it taped inside the case with one end still connected to the motherboard.

Any help would be greatly appreciated

Answer this question I have this problem too

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Why did you not install the sensor on the HD? This sensor does need to be mounted on the HD so the fans kick in when the drive gets hot.

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the sensor cable is a 2x6 port attachment but the back of the seagate only has a receptacle for a 1x4 attachment. This is the port right next to the SATA cable. I read that the thermal sensor cable is unnecessary if you buy imacFanControl because that runs off of the S.M.A.R.T indicators in the HD.

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Dan I appreciate your help however, it turns out I am an idiot, I forgot that I had stuck 2x8GB RAM sticks in addition to the 2x4GB sticks already inside. The kernel panic was due to the RAM being over 16GB for the i3 model which apparently can't handle that. Thanks for the help though. So removed the 2x8GB and replaced with 2x4GB and problem solved.

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I think you need to run Disk Utility to fix the drive. Repairing both the permissions and the disk as well.

But, you need to have a external HD or USB thumb drive which has been prepped with a bootable OS to boot up from. Then you can run Disk Utility from it.

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I ran the disk utility and it came up with a bunch of ACL errors, I read on apple's website that you can ignore those, is that not true?

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Run it again, yes you will get a few errors that won't go away (magic word - A few). more that 6 I would check what the file are.

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As a side note I did run the Disk Utility a couple more times however, the ACL errors continued to show and there were pages of them, I didn't look at everyone but it seemed that they were repeats from the time before. Disk Utility would say repaired but would catch the same error on the next repair pass.

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Reformat the HD again and install a fresh copy of OS and test the disk. But this time copy your apps & data files in small groups and test the disk after each group. It sounds like you have some corrupted files going slowly you should be able to see which set is bad.

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byy3 will be eternally grateful.
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