Does Mac use BIOS or UEFI?

Related questions

1. How do I know if my BIOS is UEFI Linux?
2. Which is better UEFI or legacy?
3. Which boot mode is good legacy or UEFI?
4. Can BIOS read GPT?
5. Will Acronis clone to a smaller hard drive?
6. How can I tell if my USB is MBR or GPT?
7. How do I know if my BIOS is legacy or UEFI?
8. What is UEFI CSM?
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Tags

1. #operating
2. #manufactured
3. #after
4. #affected
5. #extensible
6. #interface
7. #unified
8. #replaced
9. #familiar
10. #appear
11. #firmware
12. #system