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Hi Guys, I have installed the new 500 GB hard drive into the mac book. During the start up, it goes to triangle with an exclamation point -1007F. Can someone help.
The hard drive you installed is simply a blank drive, it has to be formatted a specific way and needs at least an OS X recovery partition in order to install the rest of the OS onto the other partition. This page may help you: how to make a bootable OS X 10.10 Yosemite Install drive
