official hard disk tools

• http://support.wdc.com/product/download.asp?lang=en
• http://www.seagate.com/www/en-us/support/downloads
• http://www.samsung.com/us/info/sitemap.html
• http://www.hgst.com/hdd/support/download.htm
• http://www.fel.fujitsu.com/home/drivers.asp?L=en&CID=1