It shouldn't hurt the current install, as long as you have the correct settings reapplied. I think you missed my point, though. I had an older Gigabyte board, I think a P45 series, and on one screen, the SATA drives were listed as IDE devices. It was mearly a display screen for categorization and nothing more. It had nothing to do with the way the ports were set or how the performance was. If that's the case, there's nothing to worry about.