delivered the Opinion of the Court.
¶1 James Morrison (Morrison) appeals from the order entered by the Thirteenth Judicial District Court, Yellowstone County, denying his petition for a writ of habeas corpus and, altеrnatively, for postconviction relief. We affirm.
¶2 The issue on appeal is whether the District Court erred in denying Morrison’s petition.
BACKGROUND
¶3 In February of 1991, Morrison was convicted оf the offense of sexual intercourse without consent. He was sentenced to serve 20 years in the Montana State Prison; an additional three-year sentence was imposed pursuant to § 46-18-221, MCA, for using a weapon during the commission of the offense, and Morrison was designated a dangerous offender. Morrison appealed his сonviction and sentence, and we affirmed in part and remanded for farther sentencing proceedings on the basis that the district court had failed to articulatе sufficient reasons for designating Morrison a dangerous offender.
See State v. Morrison
(1993),
¶4 On June 1, 2000, Morrison petitioned the District Court for writ of habeas corpus, arguing that the three-year sentence enhancement pursuant to § 46-18-221, MCA, should be vacated because the use of a weapon had not been charged as a separate offense in the information and the court relied on false or misleading evidence to support the enhancement. He further аrgued that his counsel at the sentencing hearing was ineffective for failing to object to the enhancement and that he had been erroneously denied good timе credits for the period' he was incarcerated prior to his conviction.
¶5 With regard to the good time credit issue, the District Court remanded the petition to the Montana Department of Corrections for *198 administrative processing. The court denied the petition with regard to the sentence enhancement issues on the basis that a writ of habeas corpus is not available to attack the validity of a conviction or sentence. The court then treated Morrison’s petition altеrnatively as one for postconviction relief and denied it as untimely filed. Morrison appeals.
DISCUSSION
¶6 Did the District Court err in denying Morrison’s petition?
¶7 Morrison contends that the Distriсt Court erred in denying his petition for writ of habeas corpus, reiterating the arguments raised in that court that the sentence enhancement pursuant to § 46-18-221, MCA, should be vacаted as improper because it was not charged as a separate offense in the information and that the court relied on false or misleading evidence to support the enhancement. He has abandoned his argument that he received ineffective assistance of counsel at sentencing.
¶8 We observe at the outset that a district court’s denial of a petition for writ of habeas corpus in a criminal proceeding is not appealable to this Court.
See Coble v. Magone
(1987),
¶9 Even assuming arguendo, however, that this case is properly before us as an original petition for writ of habeas corpus, § 46-22-101(2), MCA, provides that “[t]he writ of habeas corpus is not available to attack the validity of the conviction or sentence of a person who has been adjudged guilty of an offense in a court of record and has exhausted the remedy of appeal.” Morrison’s arguments regarding the § 46-18-221, MCA, sentence enhancement are attacks on the validity of the sentence, and it is undisputed that he has been adjudged guilty in a court of record. With regard to exhausting his remedy of appeal, the three-year sentencе enhancement was imposed at Morrison’s sentencing in 1991 and the issues related to that enhancement could have been raised in his original appeal, but werе not. Consequently, that portion of his sentence became final following our decision on Morrison’s appeal in 1993 and he has exhausted his remedy of appеal with regard to the sentence enhancement issues. As a result, even if *199 Morrison’s habeas petition were properly before us, no relief would be availablе.
¶10 As noted above, however, the District Court also addressed Morrison’s petition alternatively as one for postconviction relief and denied it on the basis that it wаs untimely filed. Morrison contends that the District Court erred in doing so. The court’s determination that the petition was not timely is a legal conclusion which we review for corrеctness.
See State v. Redcrow,
¶11 In determining whether a petition for postconviction relief is timely, we generally look to the statute of limitations in effect at the time the petition was filеd.
See Hawkins v. Mahoney,
¶12 Morrison does not deny that his petition was not filed within the statutory time frame. He argues, however, that the statute of limitations should be equitably tolled in this case because he was not informed of the factual basis for the district court’s imposition of the § 46-18-221, MCA, sentence enhancement at the time the court entered its findings in support of the dangerous offender designation on remand and, thus, was not aware of the potential claim that the court relied on false or misleading evidence. He is no doubt correct in this assertion and the reasons are clear. Our post-appeal remand to the district court for further sentencing proceedings was limited to the
*200
dangerous offender designation portion of Mоrrison’s sentence.
See Morrison,
¶13 Morrison also argues that his transfer from the Montana State Prison to correctional facilities in other states, combined with his indigency, prevented him from obtaining the legal materials necessаry to timely prepare a petition for postconviction relief. However, the record before us contains no evidence supporting Morrison’s assertion that he was unable to obtain sufficient legal materials to timely craft and file a petition. An appellant carries the burden of establishing that an error has occurred.
See State v. Hocevar,
¶14 We conclude the District Court’s determination that Morrisоn failed to file his petition for postconviction relief within the applicable statute of limitations is correct. We hold, therefore, that the District Court did not err in denying Morrison’s petition.
¶15 Affirmed.
