memory card help

[chrisJoey]

hi im new to most of this and have wind waker emulating just fine
theres one problem
it says memory card in slot a is corrupted and needs to be formatted
if i format it what is it formatting?
my hard drive?
i would like to how to fix the problem or if it is reformatting a file

rig
macbook pro 15 in
4gb ram
2.4GHz intel core 2 duo
NVIDIA GeForce 8600m GT

[Starscream]

It's just going to format the memory card file and make it usable. If there is anything on that file that you need to keep, make a backup of it and save it somewhere else.