mount -t ntfs <drive> <folder>
Like, I have my hard drive double partitioned, for a dual boot with linux. In order to see the contents of my windows drive I have to use the command:
mount -t nfts /dev/sda1 /home/beers/C:
Assuming it's ntfs. It might be fat32 since its a flash drive. Then just replace ntfs with fat32 or fat.
Make sure you use sudo or have root priviliges.
Also, most modern linux distributions will automatically mount themselves and present you with the files, so you likely don't have to do a thing.