OK so you've removed Backtrack from your USB stick.
So what's on your USB stick now? Is there an operating system on it?
You only need play around with the Master Boot Record if you plan on booting off the drive.
Otherwise just blank the entire drive out, create one large partition (e.g. a FAT32 partition), format the partition, and then copy your pr0n or music or whatever over onto it.
To create one large partition, use "fdisk" and type "m" to get a list of commands. First delete all the partitions using the "d" command, then add a partition by choosing "n".
To format the partition, use:
Code:
mkdosfs -F 32 /dev/sdb1
Then just mount it and copy your stuff across:
Code:
su root
cd /mnt
mkdir sdb1
mount /dev/sdb1 sdb1
cd sdb1
cp /home/barack_obama/pr0n ./
cp /home/barack_obama/music ./