如何自动保持TortoiseSVN项目的最新状态？

I am using TortoiseSVN for my Subversion repository held on a USB drive. When I move from one PC to another, is there a way to automatically identify that files are out of date (without using the Check for Modifications menu). It would be nice just to be able to see that the folder on my hard drive did not match that of the repository, rather than seeing the green tick.I am using TortoiseSVN for my Subversion reposi