I've tried THREE different USB hard drives - an Iomega 80gb formatted to NTFS, then to FAT32 and even FAT16 without luck. The hard drive is a USB 2.0 compliant drive that needs no additional drivers on Windows2k or XP and is "Mass Storage" compliant according to Iomega. Unfortunately the users manual is very vague and doesn't provide much help & their website is completely useless. I've also tried a Buslink USB hard drive as well as a generic USB enclosure & a Sandisk USB flash card reader without getting it to work.
I wish I had a solution for ya but I'm unfortunately in the same boat.
I just purchased the Samsung HT-P38 system because it has USB support. My plan was to set up a USB-HDD loaded with MP3s and hook it to the HT-P38, so it would be a personal home theater jukebox. I format the HDD in FAT32, as the system won't recognize NTFS. However, when I hook it up to the HT-P38, all I get is "no file." Support @ Samsung sucks! Anyone encountered this problem, and have a solution?

Chowhound
Comic Vine
GameFAQs
GameSpot
Giant Bomb
TechRepublic