Good MorningOn Motherboard Z390-E Gaming what are the steps to enable uefi Mode and Legacy mode ?i would like to know this 2 modes pls.Thank you very much

Good MorningMy HDD got broken and today i got M.2 NVMe to replace my HDD.My problem is: On Bios, Boot priority dont show any storage devices i have which are 1-SSD and 1-M.2 NVMeMy motherboard is Rog Strix Z390-E Gaming with latest drives 1602.Note: ...