If I format my WD passport to FAT32, will the data currently on it be lost?

[Joe_S]

Yes you will loose your data. Check post 6 in this   http://community.wd.com/t5/WD-Portable-Drives/unwritable-drive/td-p/435872 and see if any of them will help. The down side of formatting FAT32 is the largest file size is 4 gig.

Joe