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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Restore data problem after fusion drive


I changed my iMac HD for a 2TB hard drive and one SSD to make a Fusion Drive. Everything was find but when I take the old Internal HD out and I put on a USB external case it's not mounting.

So, do you have any suggestion to mount my old HD to restore my data ?

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When you have a working Fusion Drive and are trying to upgrade the HD you first need to break the fusion drive set. Then, you can remove the old HD drive to put in the newer larger drive.

Is that where you're stuck at?

If you just created the Fusion drive set with a new HD & SSD then your external case is having problems. 3.5" drives do need more power than the smaller 2.5" drives so make sure you have an external power unit for the drive case as it's likely not getting enough power.

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