Workarounds for SQL Server R2 evaluation period

One day open the SQL Server R2 database, pop up an example window.

Figure A

Some methods were found online (link 1, Link 2) and the results were unsuccessful. These methods are shown in Figure II to enter the installation center in the SQL2008 Configuration tool.

Figure II

Later, I tried to go from the installer to the installation center in the SQL2008 Configuration tool and then into the maintenance interface, selecting version upgrade, as shown in three.

Might

Check the upgrade rules and restart the computer with the prompts shown in four. The installation prompts you to restart your computer and repeat the above actions. Try not to restart the SQL Server service only

Figure Four

In v Select Enterprise Edition and enter the Enterprise version serial number ENTERPRISE:JD8Y6-HQG69-P9H84-XDTPG-34MBB.

Figure Five

Click "Next" and select the instance that you want to upgrade, as shown in six.

Figure Six

To confirm the upgrade information, click on the Upgrade button [Upgrade], shown in seven.

Figure Seven

Wait patiently for the upgrade to complete. If "..." appears during the upgrade process. Service not open ... " , click Retry to continue the installation after you enter the service to open all of SQL services. The upgrade is shown in eight after success.

Figure Eight

Special Note: This article is mainly from this site http://www.dedecms.com/knowledge/data-base/sql-server/2012/0821/10633.html.