Since your probation was actually revoked and you were sentenced, then you most likely cannot get a non-disclosure order.  However, depending on how your sentence was actually structured or your jurisdiction's attitude, you might be eligible for some relief.  For example, Dallas recently held a week wherein the District Attorney granted expunctions to defendant's not normally eligible because they wanted to give them a "fresh start."  If your deal had any reductions, you may be able to apply for some type of expunction.  I strongly suggest you visit with an attorney from the county where you got the conviction, let them review all of your plea papers and judgments, and see if there is a program or exception which could help you get this off your record.