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

Hello,

I am trying to use my WD Passport between two computers. it already has a lot of files saved from a PC.

Now I need to back-up my Mac.

If I format to FAT32 from Disc Utilities of my mac, will it format the whole thing and erase the files currently on it?

Thanks!

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