1) Why would a sata hard-drive need to be booted with 'Legacy Rom' in UEFI?
2)What is UEFI 'Legacy Rom' mode?
3) And finally, if the hard-drive had an old Linux on it from a computer which predates UEFI, upon reformatting, will I no longer need 'Legacy Rom' mode or is that less about software and dependant on some hardware features invented after this 150GB drive was made?
- A confused forum poster
Legacy mode is for booting non UEFI supported operating systems. Pretty much anything other than Windows 8 is considered "Legacy".