How to fix a damaged sd card? Possible Duplicate:
  “SD card is damaged - You may have to reformat.” How do I fix this problem?  




I made my SD card available as mass storage, copied one file from the SD card, unmounted the card from OSX (inside OSX) and then .. I am not 100% if I unmounted the card in mobile or it was already damaged at this point.

I tried to reboot the phone but it doesn't help. Removed the card, put back and turned on again. Didn't help either.

Do I have to reformat the card and lose all data on it?



HTC Desire + CM 7 RC2 + Kingston 16GB Type 4
You can try to recover files before you format it, but yes you will have to format it.  See this question for various methods of SD card recovery: Data Recovery - How to Restore Deleted / Formatted Files on HD Micro SD Card