Внешний DVD через USB

Не могу смонтировать DVD:
Apr 16 22:40:29 book kernel: usb 5-2: new high speed USB device using ehci_hcd and address 3
Apr 16 22:40:29 book kernel: usb 5-2: configuration #1 chosen from 1 choice
Apr 16 22:40:29 book kernel: scsi3 : SCSI emulation for USB Mass Storage devices
Apr 16 22:40:29 book kernel: usb-storage: device found at 3
Apr 16 22:40:29 book kernel: usb-storage: waiting for device to settle before scanning
Apr 16 22:40:34 book kernel:   Vendor: Optiarc   Model: DVD RW AD-5200A   Rev: 1.01
Apr 16 22:40:34 book kernel:   Type:   CD-ROM                             ANSI SCSI revision: 00
Apr 16 22:40:34 book kernel: sr1: scsi3-mmc drive: 48x/48x writer cd/rw xa/form2 cdda tray
Apr 16 22:40:34 book kernel: sr 3:0:0:0: Attached scsi CD-ROM sr1
Apr 16 22:40:34 book kernel: sr 3:0:0:0: Attached scsi generic sg2 type 5
Apr 16 22:40:34 book kernel: usb-storage: device scan complete
Apr 16 22:41:10 book kernel: usb 5-2: reset high speed USB device using ehci_hcd and address 3
Apr 16 22:41:13 book last message repeated 3 times
Apr 16 22:41:13 book kernel: sr 3:0:0:0: SCSI error: return code = 0x00070000
Apr 16 22:41:13 book kernel: end_request: I/O error, dev sr1, sector 494976
Apr 16 22:41:13 book kernel: printk: 13 messages suppressed.
Apr 16 22:41:13 book kernel: Buffer I/O error on device sr1, logical block 123744
Apr 16 22:41:13 book kernel: Buffer I/O error on device sr1, logical block 123745
Apr 16 22:41:14 book kernel: usb 5-2: reset high speed USB device using ehci_hcd and address 3
Apr 16 22:41:17 book last message repeated 3 times
Apr 16 22:41:18 book kernel: sr 3:0:0:0: SCSI error: return code = 0x00070000
Apr 16 22:41:18 book kernel: end_request: I/O error, dev sr1, sector 494976
Apr 16 22:41:18 book kernel: Buffer I/O error on device sr1, logical block 123744
Apr 16 22:41:18 book kernel: Buffer I/O error on device sr1, logical block 123745
Apr 16 22:41:19 book kernel: usb 5-2: reset high speed USB device using ehci_hcd and address 3
Apr 16 22:41:22 book last message repeated 3 times
Apr 16 22:41:22 book kernel: sr 3:0:0:0: SCSI error: return code = 0x00070000
Apr 16 22:41:22 book kernel: end_request: I/O error, dev sr1, sector 0
Apr 16 22:41:22 book kernel: Buffer I/O error on device sr1, logical block 0
Apr 16 22:41:22 book kernel: Buffer I/O error on device sr1, logical block 1
Apr 16 22:41:22 book kernel: Buffer I/O error on device sr1, logical block 2
Apr 16 22:41:22 book kernel: Buffer I/O error on device sr1, logical block 3
Apr 16 22:41:22 book kernel: Buffer I/O error on device sr1, logical block 4
Apr 16 22:41:22 book kernel: Buffer I/O error on device sr1, logical block 5
Apr 16 22:41:22 book kernel: Buffer I/O error on device sr1, logical block 6
Apr 16 22:41:23 book kernel: usb 5-2: reset high speed USB device using ehci_hcd and address 3
Apr 16 22:41:26 book last message repeated 3 times
Apr 16 22:41:26 book kernel: sr 3:0:0:0: SCSI error: return code = 0x00070000
Apr 16 22:41:26 book kernel: end_request: I/O error, dev sr1, sector 0
Apr 16 22:41:26 book kernel: printk: 9 messages suppressed.
Apr 16 22:41:26 book kernel: Buffer I/O error on device sr1, logical block 0

Дистр - Debian Etch.