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12.7 mm SATA Optical Bay SATA Hard Drive Enclosure
I installed this device paired with a Samsung 850 Pro SSD in my iMac 24 Inch, EMC 2267.
After loading Yosemite onto the SSD and after a reboot the SSD is not seen. I open the iMac, disconnect the SSD, reconnect and the machine starts as normal. Upon a restart though I have to repeat the process. Any ideas?
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Did you alter the boot disk setting in your Startup Disk control panel? So the SSD will be the boot up drive.
Starting again here:
Did you configure the SSD to be stand alone or part of a Fusion drive?
Using your USB bootable thumb drive open up Disk Utility click on each visible drive take a snapshot of each making sure you get the bottom of the disk utility dialog box. Post it here for us to see.
这个答案有帮助吗？
I did, the SSD is the startup disk.
Check the SSD setup under Disk Utility is the disk setup with GUID and formatted with Mac OS Extended (Journaled)?
Correct, that's how I originally set it up.
mmm ... That's not sounding good here. Can you take the SSD out and access externally via USB?
Yes, the SSD itself is fine. Below is a link and I believe this is the cause, Apple made Yosemite with new security requirements that block 3rd party drivers from being loaded.
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How did you install Yosemite?
由 Dan 完成的
I did a clean install of Yosemite via a bootable USB.
由 bonnerspringscomputers 完成的