[c27858]

We still have a couple of PS1 games and so bought a PS1 memory card in order to save PS1 games when played on PS2. However we get the following message:
"memory card not formatted, do you want to format it" however there are no instructions how to do this?

The other memory card we have gives the following message " memory card not found"

How do we save PS1 games when played on a PS2?