We affirm the denial of appellant’s habe-as corpus petition, which the trial court considered alternatively as one seeking rule 3.800(a) relief. This court’s affir-mance is without prejudice to appellant seeking mandamus relief in the trial court if he has exhausted administrative reme*628-646dies. See Grant v. State, 837 So.2d 1075 (Fla. 4th DCA 2003).