как смонтировать несколько снимков с помощью vdfuse

Согласно vdfuse справка команды:

DESCRIPTION: This Fuse module uses the VirtualBox access library to open a 
VirtualBox supported VD image file and mount it as a Fuse file system.  The
mount point contains a flat directory containing the files EntireDisk,
Partition1 .. PartitionN.  These can then be loop mounted to access the
underlying file systems
Version: 0.83

USAGE: vdfuse [options] -f image-file mountpoint
    -h  help
    -r  readonly
    -t  specify type (VDI, VMDK, VHD, or raw; default: auto)
    -f  VDimage file
    -s  Snapshot file(s) to load on top of the image file
    -a  allow all users to read disk
    -w  allow all users to read and write to disk
    -g  run in foreground
    -v  verbose
    -d  debug

-s (Snapshot file(s) to load on top of the image file)

В котором формате это принимает несколько снимков?