Hi My friend's son has an R4 (Upgrade Revolution for DS) which I had put some games on for him & it worked perfectly ok on both his & mine DS. It has been playing perfectly well for the past few months. He wanted me to put another game on there. Before I put the games on I tested his R4 in my Ds & it just said 'No DS card inserted' Then I put the card in my computer. I noticed that one of the games I had put on there previously had disappeared. Prephaps he deleted something that makes the R4 work. So I put another game on his R4 & it was a RAR file but I had forgotten to extract the file so when I went to open the R4 file on the PC it just says 'The disk in Drive E is not formatted' Do you want to format it now'? So I click yes but it says 'Can not format' I clicked on Properties and it shows that the Micro SD card is full but says 0 Bytes. Please help? Many thanks
He has probably removed the card with the power on (or while the game was loading) To try (it may not work) and recover the micro sd put it in a dumb device (camera etc)and format
Thanks but I have sorted it out now. I had to use another USB stick & formatted the micro sd card & had to start all over again.
