I have a DELL T110 and like to have a better understanding as to what these settings mean.
There are 4 different mode SATA settings - OFF / ATA Mode / ACHI Mode / RAID Mode. There are two Boot Modes - UEFI (whatever it is) and BIOS. When I choose BIOS mode, and select Boot Sequence, I can see CD/DVD ROM Drive &HD and change priority between them. However if I choose UEFI, the system does not even let me get into boot priority screen.
I like to understand what these 4 SATA settings mean and difference between UEFI and BIOS boot modes.