#dmesg
....
SCSI device sda: 978944 512-byte hdwr sectors (501 MB)
sda: Write Protect is off
Partition check:
/dev/scsi/host0/bus0/target0/lun0: p1
WARNING: USB Mass Storage data integrity not assured
USB Mass Storage device found at 2
usb.c: USB disconnect on device 2
hub.c: USB new device connect on bus1/2, assigned device number 3
WARNING: USB Mass Storage data integrity not assured
USB Mass Storage device found at 3