Drive I Help

I've saved my Assignment to my Memory Stick, then when I've gone to get it off my Memory Stick it says:

Code:

Removable Disk (I:) is not formatted

Do you wish to format now? Yes/No

Does this mean that if I click yes, it will format my Memory Stick and I'll lose my Assignment?

 

What sort of memory stick is it?

 

Yah it'll format it and erase it unless your changing the format of the drive like a fat32/ntfs