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[ 5431.411074] usb 1-4: USB disconnect, device number 3

[ 5437.936025] usb 1-4: new high-speed USB device number 4 using ehci_hcd

[ 5438.072277] scsi9 : usb-storage 1-4:1.0

[ 5439.073450] scsi 9:0:0:0: CD-ROM            Tenda Ma ss Storage            PQ: 0 ANSI: 0 CCS

[ 5439.075936] sr1: scsi3-mmc drive: 52x/52x cd/rw xa/form2 cdda tray

[ 5439.077860] sr 9:0:0:0: Attached scsi CD-ROM sr1

[ 5439.078042] sr 9:0:0:0: Attached scsi generic sg3 type 5

[ 5439.661463] ISO 9660 Extensions: Microsoft Joliet Level 3

[ 5439.672944] ISOFS: changing to secondary root