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Model A1312 / Mid 2011 / 2.7 & 3.1 GHz Core i5 or 3.4 GHz Core i7 Processor, ID iMac12,2

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Cant find drive, OS install questions. Im stuck.

BACK INFO.

Mac $@$* the bed one day, cant see HD in recovery mode but could see SSD

I just finished replacing the HD with a brand new 4TB, I also installed the heat sensor as per recommendation.

I boot into RECOVERY mode and all I still see is my SSD in disk utility

If I select restore from back up or install OS it doesn't show the new HD or the SSD

SO NOW WHAT?

Can I install the OS onto the SSD from a memory drive so the computer can be usable even if I cant get the HD working? ( I saw it wont let me patition the SSD, but I can erase and format it. If I do that in recovery mode wont it remove the RECOVERY mode from the SSD ?)

Do I need to do the memory drive OS install to find the Hard drive?

Do I need to remove the heat sensor all together?

Im literally back to where I started before opening up my IMAC.

Answer this question I have this problem too

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Sounds like your machine may have been formatted as a Fusion drive if it also has an SSD installed.

You should be able to install OS to the 4TB HDD from a working Mac, then install drive to machine.

Some of these iMacs has tiny SSDs (64GB or less) that can be safely ignored or used exclusively as Recovery drive.

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Correct, this computer was a fusion drive and has a 128gb SSD drive, that is the only drive im able to pick up. Unfortunately I don't have another computer I can format it off as I only have IMAC not Tower machines which requires pulling the monitor. Im going to try tethering my two desktops and running the other one in drive mode, see if that works.

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Sean will be eternally grateful.
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