where is start page stored in profile?
The Firefox help guide says that all my personal preferences, such as start page, bookmarks, form history, etc. are stored in my profile. There is a detailed description about how to copy password data, bookmarks, form history, etc. from a saved profile to a new profile, but what about the home page? If it is stored in the profile folder, where is it and how do I copy this to a new profile?
Opaite Mbohovái (1)
It is one of the preferences (browser.startup.homepage) stored in the prefs.js file in the profile folder. That file stores the majority of your user set preferences.
Why not just set the home page in the other profile by using the options dialog - https://support.mozilla.com/kb/How+to+set+the+home+page