After Microsoft releases Windows 7 / Windows Server 2008 R2 Service Pack 1 to public, Microsoft now provides single evaluation media ISO for Windows Server 2008 R2 with Service Pack 1 for free download. To download the official ISO just access http://technet.microsoft.com/en-us/evalcenter/dd459137.aspx and logon with your windows live ID.
Windows 2008 R2 is still at SP1 as latest. Windows Server 2008 R2 Free Download ISO full trial version 32/64-bit ISO bootable image direct single click, official Microsoft, google drive download link. It is the full offline installer highly compressed standalone setup of Windows Server 2008 R2 Enterprise ISO, and Windows Server 2008 R2 Standard. Windows Server 2008 R2 SP1 Install Instructions To start the download, click the Download button and then do one of the following, or select another language from Change Language and then click Change.
Or use this Direct Download Link
Windows Server 2008 All In One R2 SP1 Pre-Activated (x64) INFO. Title: Windows Server 2008 All In One R2 SP1 Pre-Activated (x64). Then you can copy everything from the Windows Server 2008 installation DVD/ISO onto the USB key (a simple drag and drop will do).
File Name: 7601.17514.101119-1850_x64fre_server_eval_en-us-GRMSXEVAL_EN_DVD.iso
File Size: 2.9GB
Windows Server 2008 R2 Enterprise Service Pack 1 Download Problems
The expiration period expires after 180 days. After that the windows system will run with reduced functionalities and reboot every hour.