To understand the problem, one must first appreciate the original context. The official PlayStation 2 memory card offered a paltry 8 MB of storage—a severe limitation even in 2005. Tekken 5 was unusually demanding. Unlike a linear action game that might occupy a single 150 KB block, Tekken 5 saved vast amounts of data: character customization data, ghost data (AI that mimics player behavior), ranked match history, replay files, and unlockable content from the included arcade versions of Tekken 1 , 2 , and 3 . A fully fleshed-out Tekken 5 save file could easily exceed 1.5 MB, a significant chunk of the 8 MB card. On original hardware, players managed this scarcity by dedicating a single memory card exclusively to Tekken 5 . The error message "Memory card full" was a known, accepted constraint—a physical limitation of the era.
Before adding more space, clean up the existing card: tekken 5 pcsx2 memory card full
: In the Memory Cards settings, click in the white space and select Create . To understand the problem, one must first appreciate