> Feb 14 21:53:18 mnr kernel: /dev/scsi/host20/bus0/target0/lun0: p1 look at the "p1" My external usb hard drive shows: /dev/scsi/host0/bus0/target0/lun0: p1 p2 I have two partitions. > Feb 14 21:53:18 mnr kernel: Attached scsi removable disk sdb at scsi20, channel 0, id 0, lun 0 > Feb 14 21:53:18 mnr kernel: usb-storage: device scan complete > > There is no /dev/scsi and /dev/sdb doesn't work. > Try with /dev/sdb1