Hi! Thought this wouldn't be a new problem, but I don't seem to be able to find any post on this subject. Could be because I'm new to this site and to unattended installation. Anyhow.. I'm installing an application using start.cmd from ..\$OEM$\$1\INSTALL. The application uses setup.iss and in this, there's a distinct path: C:\Program Files\.. etc. for where to install the app. That works fine. My problem is this: How do I make the installation independant of the drive stated in setup.iss? I wish to be able to use the installation-CD for partitions different from C: If I use %systemdrive%\Program Files\... it tries to install the app in the ..\$1\INSTALL dir. which of cause fails. I'd be happy to any guidance whatsoever. Thanks in advance!