hard disk problem on Vista ultimate

[rattlergr]

Hello!Yesturday i instaled Vista ultimate 64b .in my pc i have 2 hard disks,one 80gb (sata2) for windows and one 320gb(ata),i instaled all the motherboard drivers for Vista 64b(i have the Asus M2N32 WS Professional) but i have this problem:the pc doesnt read the most of the files i have in the 320gb disk only some of the thousands photos,videos and mp3's,i thought it was my disk's problem but when i change my 80gb disk with my old disk with Windows Xp the 320gb disk is ok and i can use all the files!
Have any of you guys any idea what may cause this?
Thanks!

[ajbabao]

Okay can you be more specific on this issue? from what i read you have an 80 gig hard drive that's SATA and the 320 gig hard drive is ATA? fgrom what i know 320gig hard drives are SATA enabled nowadays and the 80gigs are IDE type drives.