What prevented Bartholomew Dias from sailing on to Asia?

Bartholomew Dias was prevented from sailing on to Asia primarily due to the treacherous conditions encountered along the coast of Africa, including strong storms and rough seas. After reaching the Cape of Good Hope, his crew became increasingly fearful and refused to continue the journey further into the unknown waters. Additionally, the limited supplies and the desire to return home contributed to their decision to turn back, marking Dias's voyage as a significant but ultimately incomplete exploration.