Is it possible to specify relative path for PM8 in setup.iss to install in unattended mode? That is, to replace szDir=C:\Program Files\PowerQuest\PartitionMagic 8.0\ with something like: szDir=%ProgramFiles%\PowerQuest\PartitionMagic 8.0\ In my case PM8 installed successfully with /s /v/qn switches and "C:\Program Files\PowerQuest\PartitionMagic 8.0\" path in setup.iss file, but failed when using ''%ProgramFiles%\PowerQuest\PartitionMagic 8.0\" path