Windows 7 External Hardrive problem

[MacMiniBoy]

I recently got one of those new dell 17" Touch Screen Laptops with WIndows 7 x64 pro

I also got an Icy box eSata/USB Hardrive Dock, I formatted a 500GB 3.5" drive and used it as a backup for my system.

Tonight I have tried plugging it via USB & eSata and Explorer wont see it, it showed up in device manager.

The funny thing is if I plug it into my macbook it see's it and I can access the files

So this aint a hardware error this is the so called awesome windows 7

Please help

 

[MacMiniBoy]

I didnt format it on my mac, i said my mac could read it.

all formatting was done on the Dell, it worked, now it doesnt