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Original post by: Wouter ,



I would like to add some more information. Yesterday i got around to installing the new drive however it did seem to make a difference where I installed the startup disk. Disk utility would not allow me to reformat my drive and I therefore tried the new SSD in the main drive bay, which solved all my problems.

My specs: mid 2012 unibody 13 inch MacBook Pro Witt Mac OS X 10.8.5. I bought the ifixit dual hard drive upgrade kit. Samsung SSD 840 500GB.

Hopefully this might be helpful for other people trying to do the same.