One tower is a 2.6Ghz Pentium single core, 1 GB ram, 40 GB HD. Clean install of Windows.
The other tower is a 3.0 Ghz Pentium single core, 1.76 GB ram, 80 GB HD.
Both see the external Terabyte drive and on hard drive properties it shows 26 GB used on the 2 Terabyte.
When I explore the drive it shows no files at all.
I took the external Terabyte drive to my dual-core and more recent and newer tower and the drive also shows up as a 2 TB drive with 26GB of data. It shows all the files and folders just like a memory stick.
I have two laptops with dual-core processors. One a Lenovo with XP, 2GB memory, 2.2Ghz, 160 Gb HD. This computer does not show the files either.
My Dell Latitude D630 with Win 7, 2.2Ghz, 120 GB HD, shows the files on the Terabyte drive.
I don't know what more info I can give you.
I am thinking it's something to do with the bios. Strange.