# uname -sv
FreeBSD FreeBSD 4.7-PRERELEASE #8: Sun Sep 15 12:48:36 JST 2002     root@:/usr/obj/usr/src/sys/GENERIC


USBに刺したとき
Sep 15 20:48:10 bnx /kernel: umass0: MELCO INC. USB2/SCSI Bridge, rev 2.00/1.00, addr 2
Sep 15 20:48:10 bnx /kernel: da0 at umass-sim0 bus 0 target 0 lun 0
Sep 15 20:48:10 bnx /kernel: da0: <KONICA OMD-13060 2.00> Removable Optical SCSI-2 device
Sep 15 20:48:10 bnx /kernel: da0: 650KB/s transfers
Sep 15 20:48:10 bnx /kernel: da0: Attempt to query device size failed: NOT READY, Medium not present



抜いたとき
Sep 15 20:51:29 bnx /kernel: umass0: at uhub0 port 2 (addr 2) disconnected
Sep 15 20:51:29 bnx /kernel: (da0:umass-sim0:0:0:0): lost device



USBの状況
# usbdevs -v
Controller /dev/usb0:
addr 1: self powered, config 1, UHCI root hub(0x0000), VIA(0x0000), rev 1.00
 port 1 powered
 port 2 addr 2: self powered, config 1, USB2/SCSI Bridge(0x0026), MELCO INC.(0x0411), rev 1.00


MS-DOSフォーマットの640M MOメディアをmount
# umount /mnt
# mount -t msdos /dev/da0 /mnt
# ls -la /mnt
total 18
drwxr-xr-x   1 root  wheel  16384  1  1  1980 .
drwxr-xr-x  18 root  wheel    512  9 15 13:02 ..
# umount /mnt