I set Windows 7 to my Boot Camp. Windows 7 starts now by default in the normal boot. However, I want that OSX boots by default and Windows 7 only as I press ALT and then select it.
How can you set OSX to boot by default?
You don't need to boot into OSX to change the default boot system ...
Older versions of Boot Camp are similar, but I don't remember if the icon changes.
Official documentation here:
If you press and hold the Control key during this step, your selection is saved in Startup Disk preferences, so it persists until you change it.