I recently bought a used PS2, a used memory card and some used PS2 games. The games all worked fine and the memory card worked as it should. However, When I borrowed a copy of Final fantasy 7 (for the PS1) from my friend, I got to a save point and it said It couldn't find a memory card! The card was inserted in the slot and when I tried accesing the save files for my PS2 games they were all fully intact. Later that day I bought Tony Hawk Pro Skater 1 (for the PS1) and tried to use it in my PS2. Once again the game worked but when I tried to save and Once again I got a message saying that I had no memory card! Do you need to get a special PS1 memory card in order to save PS1 games when using a PS2, or is this just some freeky coincidence?
I would greatly appreciate any insight you could offer on my plight!