I am in trouble with my imac. Let me tell our story;
My imac was too slow and I decided to change HDD with a SSD. If I just be changed HDD, There was no problem. But I want to clone my HDD to SSD hard drive.
- I cloned my HDD to SSD with follow this video. I used Carbon Copy Cloner app for clone, and I did something with Multibeast like in video(I guess problem start this point, I wish I had not Multibeast).
- I changed HDD like this link
- Open my Imac and came a boot screen I never seen ago;
- I choose one but screen freezed, I waited for hours but there was no progress.
- And I close Imac use power button.
- Now my Imac looping chime on booting like this macbook
- If I unplug Screen cable, Chime sound come only one and fan running.
- I try thunderbolt output for display but not working.
- I try PRAM reset not working, I removed PRAM battery even but not working.
- I try reinstall macos with USB or direcly with HDD but not working.
I think Multibeast corrupted EFI Flash So I learned Multibeast using for Hackintosh after this incident.
How can I fix my Imac? If problem about with EFI Flash, How can I reinstall EFI on rom.
Thanks in advance