Problem with Installoptions!

I have a problem. 🙁

I have three extra pages made with installoptions, where the users can choose their favourite programs to be set up in an ini file(My project installs a litestep distro)

However, if a user is just updating, then the ini file should not be touched! Is it possible to set a section not to show installoptioin pages if it is(or not) selected, and not to write the inistrings?

/resista

Check if the user is updating and only call IO if he isn't. For example:

ReadRegStr $0 HKLM "Software\myApp" "installed"
StrCmp $0 "yes" skip_io
   ; ....
   ; io stuff
   ; .....
skip_io: 

That is one solution, but, i would prefer letting the user choose to install as an update or full install!

So make an IO pages that will let the user choose and according to what the user chose, display, or don't display the required IO pages.