My firmware is up to date. I have done internet booting. I have booted from a bootable Siera AND El Cap flash drive. I have tried resetting PRAM. I have gone through power cycles. I have swapped out SSD locations to make sure they work fine, and they do. The issue is the drive that's in the Optical Bay won't read. When it does read, it doesn't let me erase or if it does, it fails when I try to RAID them together. I've been working on this for over 10 hours within last 3 days trying to figure it out. My old HDD works fine in the Optical Bay, but my new SSD doesn't. PLEASE HELP.
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Did you get this to work?? I can't find my second SSD still. I've tried everything.
My firmware is up to date. I have done internet booting. I have booted from a bootable Siera AND El Cap flash drive. I have tried resetting PRAM. I have gone through power cycles. I have swapped out SSD locations to make sure they work fine, and they do. The issue is the drive that's in the Optical Bay won't read. When it does read, it doesn't let me erase or if it does, it fails when I try to RAID them together. I've been working on this for over 10 hours within last 3 days trying to figure it out. My old HDD works fine in the Optical Bay, but my new SSD doesn't. PLEASE HELP.