~> dmesg | tail
usb 1-2: USB disconnect, address 2
usb 1-2: new high speed USB device using ehci_hcd and address 3
usb 1-2: configuration #1 chosen from 1 choice
scsi3 : SCSI emulation for USB Mass Storage devices
usb-storage: device found at 3
usb-storage: waiting for device to settle before scanning
sd 3:0:0:0: [sdb] Mode Sense: 00 00 00 00
sd 3:0:0:0: [sdb] Assuming drive cache: write through
sd 3:0:0:0: [sdb] 3948543 512-byte hardware sectors: (2.02 GB/1.88 GiB)
sd 3:0:0:0: [sdb] Write Protect is off
sd 3:0:0:0: [sdb] Mode Sense: 00 00 00 00
sd 3:0:0:0: [sdb] Assuming drive cache: write through
sdb:
sd 3:0:0:0: [sdb] Attached SCSI removable disk
sd 3:0:0:0: Attached scsi generic sg1 type 0
usb-storage: device scan complete
~> sudo mount -t vfat /dev/sdb /mnt
mount: wrong fs type, bad option, bad superblock on /dev/sdb,
missing codepage or helper program, or other error
In some cases useful info is found in syslog - try
dmesg | tail or so