Margo, I had this same problem with a SD card in a Sharp Zaurus PDA. The only way I was able to resolve it was to put the card back into a Windows machine and let Windows format it. Hope this helps. Good Luck, Jason > When I plug it in now, it's picked up as a flash disk (good) however > the filesystem comes up as unknown or not recognised. > > I have searched everywhere to find out the command to reformat the disk > as vfat in linux... perhaps its too basic a command to be in any faq. > Can anyone help. > > Margo
