Inno Setup launch executable (to install drivers) during installation

Question

I am using Inno Setup to create an installer for my application. The installer is very basic and just copies some files. This works very well and I am happy with it.

Answer 1

In this case, it's best to remove the postinstall flag so it runs unconditionally at the end of the setup process (but before it says finished) and add a Check: parameter to limit it to the correct bitness:

[Run]
Filename: "{app}\driver\IviSharedComponents_2.2.1.exe"; StatusMsg: "Installing USB driver (IVI Foundation)"; Check: Not IsWin64(); Flags: skipifsilent
Filename: "{app}\driver\IviSharedComponents64_2.2.1.exe"; StatusMsg: "Installing USB driver (IVI Foundation)"; Check: IsWin64(); Flags: skipifsilent

If you want this to be conditional, you can use a normal [Tasks] entry that prompts before the setup starts.