2nd HDD recognized, but not the files on it

Hello,
I use Vista and just had to replace primary SATA drive with new install. It worked fine. My 2nd SATA HDD was originally recognized. It has all my important files on it. I just use it as a mass storage device. I was able to access the files on it. Now it is showing up in my computer and it is asking for it to be formatted and there is no info showing that it has files already on it. I'm starting to freak out. I went to Disk Management and rescanned the drive but it is only showing it as a RAW file system, not the NTFS. Also it is a 1T drive and it shows 32MB. Please help.