$ mount
/dev/sda2 on / type ext3 (rw,errors=remount-ro)
proc on /proc type proc (rw)
sysfs on /sys type sysfs (rw)
devpts on /dev/pts type devpts (rw,gid=5,mode=620)
tmpfs on /dev/shm type tmpfs (rw)
usbfs on /proc/bus/usb type usbfs (rw)
tmpfs on /lib/modules/2.6.12-10-386/volatile type tmpfs (rw,mode=0755)
tmpfs on /dev type tmpfs (rw,size=10M,mode=0755)
/dev/sdb1 on /media/usbdisk type vfat
(rw,noexec,nosuid,nodev,quiet,shortname=winnt,uid=1001,gid=1001,umask=077,iocharset=utf8)
I also went into the Ubuntu Device Manager where I can see
volume.fsversion = FAT32.