I have an internal DVD-ROM detected as /dev/cd0 which works OK. When I plug the external USB DVD-RW drive it is show in messages as: Jun 20 16:36:11 illbsd kernel: ugen1.4: <vendor 0x0402 USB 2.0 Storage Device> at usbus1 Jun 20 16:36:11 illbsd kernel: umass0 on uhub3 Jun 20 16:36:11 illbsd kernel: umass0: <vendor 0x0402 USB 2.0 Storage Device, class 0/0, rev 2.00/1.03, addr 4> on usbus1 Jun 20 16:36:11 illbsd kernel: umass0: SCSI over Bulk-Only; quirks = 0x0100 Jun 20 16:36:11 illbsd kernel: umass0:4:0: Attached to scbus4 Jun 20 16:36:11 illbsd kernel: cd1 at umass-sim0 bus 0 scbus4 target 0 lun 0 Jun 20 16:36:11 illbsd kernel: cd1: <TEAC DV-W50D 1.07> Removable CD-ROM SCSI device Jun 20 16:36:11 illbsd kernel: cd1: 40.000MB/s transfers Jun 20 16:36:11 illbsd kernel: cd1: 612MB (313585 2048 byte sectors) Jun 20 16:36:11 illbsd kernel: cd1: quirks=0x10<10_BYTE_ONLY> # camcontrol devlist <ST1000DM003-1CH162 CC47> at scbus0 target 0 lun 0 (pass0,ada0) <ST2000VX000-1ES164 CV26> at scbus1 target 0 lun 0 (pass1,ada1) <hp DVDRAM GT50N MP01> at scbus2 target 0 lun 0 (cd0,pass2) <AHCI SGPIO Enclosure 1.00 0001> at scbus3 target 0 lun 0 (pass3,ses0) <TEAC DV-W50D 1.07> at scbus4 target 0 lun 0 (pass4,cd1) But there is no /dev/cd1 device: # ls -l /dev/cd* crw-rw-rw- 1 root operator 0xb2 20 Jun 16:33 /dev/cd0 lrwxr-xr-x 1 root wheel 3 20 Jun 08:09 /dev/cdrom -> cd0 I thought it will be there automatically. Is there something I can do to make second drive work? # uname -srmi FreeBSD 11.3-RELEASE-p9 amd64 GENERIC Kind regards Miroslav Lachman