ubuntu@ubuntu:~$ dmesg |grep sd
[   51.241604] sd 0:0:0:0: Attached scsi removable disk sda
[   51.243747] sd 0:0:0:1: Attached scsi removable disk sdb
[   51.246702] sd 0:0:0:2: Attached scsi removable disk sdc
[   51.248554] sd 0:0:0:3: Attached scsi removable disk sdd
[   51.253637] sd 0:0:0:0: Attached scsi generic sg0 type 0
[   51.253666] sd 0:0:0:1: Attached scsi generic sg1 type 0
[   51.253696] sd 0:0:0:2: Attached scsi generic sg2 type 0
[   51.253723] sd 0:0:0:3: Attached scsi generic sg3 type 0