WD30EFRX 3TB: seen as a 800 GB hd only

Hi, as posted in the subject, my o.s. recognizes only 800 GB with a 3TB disk.

Any help will be appreciated.

ciao.

what sys u use ? som motherboards dont suport 2tb+ hdd. check bios updates.

http://blogs.technet.com/b/askcore/archive/2010/02/18/understanding-the-2-tb-limit-in-windows-storage.aspx