You should be able to run the installation file of your 2011.5 HD and tell it to install to your 2011 HD assuming they are both connected to your PC at the same time. I have BiaB installed on a USB drive and just update it with each newer version and keep the new HD as a backup.


BiaB 2013 b366, RB 2013 b4, WinXP Pro SP3, Toshiba M70, 1.8GHz 2GB RAM 100GB HD. Focusrite Saffire 6 USB, Ketron SD2.BiaB Wiki