Kerbal Space Program, how do you disable autosave?
Solution 1:
You can't disable autosave in KSP
Auto save can't be disabled in KSP. You can set it to only autosave after very long intervals however it still seems to autosave at the start of a launch.
To change the interval you'll need to open settings.cfg located in your KSP directory. There are two settings AUTOSAVE_INTERVAL and AUTOSAVE_SHORT_INTERVAL that you can increase as desired. A setting of -1 seemed to be ignored and autosaves continued as usual.