Think about it, if you can......I can only assume OP probably "shares" DS with sister and when she has a turn at playing "her games", she randomnly deletes one/more of his games with the click of one/two buttons (whether deliberate, or otherwise). So, given my assumption of what's probably happening, you think that this solution will help?? OP would need to remove MicroSD, place in PC, hide selected games and replace MicroSD for the sister to use when she wants...
Or he will just need to hide all his files, then give it to her.
When he wants to play he simply presses SELECT on the R4 (, once for EBOOK mode, once for SAVer mode and one final time for files mode) ) for it to show hidden files. When he has finished playing he presses SELECT again and gives it back to his sister.
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No one in their right mind would keep changing hidden properties on their MicroSD.
And nobody with even the slightest clue on how the R4 works would need to either.
It's the only option he really has, other than buying his sister a $3 1gb microsd card for herself.
QUOTE
and what if they both play certain games under different save files?