Wah!! Problem!!!
I purchased Gran Turismo 4 yesterday and found it requires at least 1,500kb of space. I have 3 memory card and they are all pretty full, so I decided to put my one memory card of all Pro Evo 3 stuff onto the Max-Drive then onto the PC - and bingo, empty memory card!
But, after moving all the files over, I returned to the PS2 browser menu, look at the memory card and found lots of icons where data was corrupt. The PES3 icons (which I tmoved directly over to the Max Drive) were still there but corrupt, and the other save files on the memory card which I didn't try to move were corrupt. And I can't delete or move corrupt data.
What went wrong?