mount usb drive

[Jim Chapman]

I need to mount a usb flash drive. I am using DragonFly 2.2.2 and a 
GENERIC kernel.

The commands
 mount -t msdos /dev/da1 /mnt
 mount -t msdos /dev/da1s1 /mnt
 mount -t msdos /dev/da1s1a /mnt
all return
 Device not configured
Using the command mount_msdos gives the same result.

Am I doing something wrong or is there a problem?

Thanks