2TB Green Drive Not detecting in Windows 7 or Snow Leopard

I purchased a 2TB Green HDD ,

Ran Windows 7 Backup … all good 

Ran A time machine backup … all good 

Anybody help with how to update the firmware on the device … is also encouraged … ha ha 

I AM USING A MCDIA MEDIA CENTRE & ENCLOSURE …think this may be the problem .

The DRIVE WAS PARTIONED INTO 2 SEPERATE DRIVES PRIOR TO THIS TAKING PLACE !!

Turned the computer off & restarted this morning … Nothing on either OS … windows 7 or Mac 

I cannot even detect the drive on any machine …

I have a 27’IMAC I7 with 8 gig ram & a internal 1TB drive …  runnig Windows 7 Ultimate ( Yuck ) & 10.6 OSX Snow Leopard 

Help would be awesome … Cheers Jay