HighPoint RR2720A Installation Manual page 4

Linux Ubuntu on RR2720A Installation Guide
b. Disable "Secure Boot", set "Attempt Secure Boot" to "Disabled".
2. Set UEFI setting with GA-X570 AORUS MASTER motherboard as an example.
a. Set " Boot->CSM Support " to "Enabled";
b. And" Boot-> Storage Boot Option Control " to "UEFI Only";
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