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