mmls damaged-usb.img 
DOS Partition Table
Offset Sector: 0
Units are in 512-byte sectors

      Slot      Start        End          Length       Description
000:  Meta      0000000000   0000000000   0000000001   Primary Table (#0)
001:  -------   0000000000   0000002047   0000002048   Unallocated
002:  000:000   0000002048   0015556607   0015554560   Win95 FAT32 (0x0b)


I want to mount the win95/fat32 partition. Im following Extract filesystem from recovered image from https://help.ubuntu.com/community/DataRecovery. I tried both sudo mount -o loop,offset=16384 file mnt and sudo mount -t ntfs -o r,force,loop,offset=32256 file mnt with the numbers changed f=to fit 2048*512, but output is:

mount: file: failed to setup loop device: No such file or directory

help please