Question: My 256GB M1 Air is full. Can I put a bigger SSD in it?
A
Answer: No, not the way you'd upgrade a normal laptop. The M1 MacBook Air has no SSD module to swap: its storage is a set of flash chips soldered to the logic board, and Apple says the storage "is not user accessible." A few specialist repair shops can remove those chips and solder on bigger ones, but it's delicate board-level work with real risk. For most people the practical upgrade is an external SSD, iCloud, or both.