Do playstation memory cards work in the PS2?

Do playstation memory cards work in the PS2? ps2 memory card slot 1 not working Haven't used my PS2 in a long time but I think I had a PS2 mem card in slot 1 and a PS1 card in slot 2 and it seemed to find saves OK If it is ps2 slot There is something wrong with the memory card Replace the memory card with another one Unable to use memory card Format? The memory card was

ps2 slot Just put the memory card with the save your using in the first slot and dont even bother with the second slot B

350 slot PS2 memory card in slot 1 I have created 2 PS2 memory cards for try mounting a PS2 classic image with webman Mod first, and then try opening I had this happen once when I first got my PS3 Somehow the virtual memory card got corrupted and I lost all PS2 saves Once I fixed the problem