Can I take the magnetic disk with me on the plane?

Is not allowed. According to civil aviation regulations, the items that passengers are forbidden to carry or check include: guns, military or police equipment, and controlled knives; Flammable and explosive articles; Toxic, corrosive and radioactive substances; Other articles that endanger flight safety, such as strong magnetizers that may interfere with the normal work of various instruments on the plane, and articles with strong irritating smell; Other articles prohibited from being carried or transported by national laws and regulations, and imitations of the above articles.