Blah Blah, coaches lie. Blah Blah kids lie too. That is not the point. the point is that the ncaa has rules, and athletic departments have policies IN WRITING. An informed consumer would know them BEFORE signing, but even so, if you want to know now, contact THE COMPLIANCE OFFICE at the school you already signed with. The will give you the official, unbiased answer to your question, and will do so in writing. Not the nonsense you are getting on here about "I had friends that got screwed over by a coach."
Different conferences have different policies. Different athletic departments have different policies. NOBODY ON HERE can give you the answer with 100% certainty, but the compliance office of the school you signed with can.
Be coachable, get good grades, run fast, stay out of trouble and you "should" be fine. If for some reason you are mistreated, starting in October you are going to be able to put your name on a "free agency" list and can be contacted by other schools that may appreciate you more.
But if you are looking for someone to tell you that your scholarship is guaranteed no matter what you do, good luck believing that, and good luck in the real world. No such thing as a free lunch.