I have an AT7 and have bought a hard drive greater than 137 GB. The hard drive is off of my HPT 374 Raid controller although I am not using any Raid arrays. I am trying to find out if my mobo supports 48 bit LBA. Does 48 bit LBA depend on my mobo and BIOS or does it depend on my HPT 374 Raid controller ? Is there a setting in my BIOS or Raid controller BIOS for this ? Abit has a page about 48 bit LBA support, at [URL]http://www.abit-usa.com/faq/mb/check137gb.php[/URL], but the AT7 is not listed on it although the date of the page is about the same time I bought my AT7.