Hello,

I have 3 external hard drives.

One is a Terabyte maxtor drive, a 500 gig maxtor, and a 500 gig buffalo. They are on my server being shared over my network. I can mount all 3 drives successfully. I open up the 2 500 gigs by double left clicking as usual. The terabyte drive always asks for a default program and the checkbox is disabled.

I even tried plugging it in to my desktop through usb and get the same issue.

Server is windows 2003, all machines are running on XP.

any ideas?

Could you try downloading/installing any drivers for the HD? I know I had a driver that came along with my 200gig HD.