mercredi 4 mars 2015

Stop sign at boot - new SSD


I've got a mid 2012 MBP 13" in which I inserted a brand new MX100 in the place of the old HDD. I've put the old HDD in a case in the superdrive place and tried to install 10.10 but the install failed.


I then tried with th SSD in an USB case, managed to install & boot 10.10. Then I put the SSD back in the Mac and got the stop sign at boot.


At first I thought it was the Firevault on the HDD which was causing the issue but even after turning it off, the mac didn't want to boot...


Which brings me 2 questions:



  • Why does it boot when plugged in an USB case and not from inside?

  • How can I fix this thing?





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