联想ThinkCentre M4250S二手，没有光驱。

live@RedFlag:~$ sudo dmesg | grep sr0
[    6.808405] sr 4:0:0:0: [sr0] scsi-1 drive
[    6.808600] sr 4:0:0:0: Attached scsi CD-ROM sr0
[    6.827905] sr 4:0:0:0: [sr0] tag#0 FAILED Result: hostbyte=DID_ERROR driverbyte=DRIV
ER_OK
[    6.827908] sr 4:0:0:0: [sr0] tag#0 CDB: Read(10) 28 00 00 00 ff fc 00 00 02 00
[    6.827909] print_req_error: I/O error, dev sr0, sector 262128
[    6.873778] sr 4:0:0:0: [sr0] tag#0 FAILED Result: hostbyte=DID_ERROR driverbyte=DRIV
ER_OK
[    6.873780] sr 4:0:0:0: [sr0] tag#0 CDB: Read(10) 28 00 00 00 ff fc 00 00 02 00
[    6.873782] print_req_error: I/O error, dev sr0, sector 262128
[    6.873811] Buffer I/O error on dev sr0, logical block 32766, async page read
[    6.879401] sr 4:0:0:0: [sr0] tag#0 FAILED Result: hostbyte=DID_ERROR driverbyte=DRIV
ER_OK
[    6.879404] sr 4:0:0:0: [sr0] tag#0 CDB: Read(10) 28 00 00 00 04 00 00 00 02 00
[    6.879405] print_req_error: I/O error, dev sr0, sector 4096
[    6.925776] sr 4:0:0:0: [sr0] tag#0 FAILED Result: hostbyte=DID_ERROR driverbyte=DRIV
ER_OK
[    6.925779] sr 4:0:0:0: [sr0] tag#0 CDB: Read(10) 28 00 00 00 04 00 00 00 02 00
[    6.925780] print_req_error: I/O error, dev sr0, sector 4096
[    6.925807] Buffer I/O error on dev sr0, logical block 512, async page read
[    6.971403] sr 4:0:0:0: [sr0] tag#0 FAILED Result: hostbyte=DID_ERROR driverbyte=DRIV
ER_OK
[    6.971406] sr 4:0:0:0: [sr0] tag#0 CDB: Read(10) 28 00 00 00 fe 80 00 00 3c 00
[    6.971407] print_req_error: I/O error, dev sr0, sector 260608
[    7.017777] sr 4:0:0:0: [sr0] tag#0 FAILED Result: hostbyte=DID_ERROR driverbyte=DRIV
ER_OK
[    7.017778] sr 4:0:0:0: [sr0] tag#0 CDB: Read(10) 28 00 00 00 fe 80 00 00 02 00
[    7.017780] print_req_error: I/O error, dev sr0, sector 260608
[    7.017807] Buffer I/O error on dev sr0, logical block 32576, async page read
[    7.065776] sr 4:0:0:0: [sr0] tag#0 FAILED Result: hostbyte=DID_ERROR driverbyte=DRIV
ER_OK
[    7.065779] sr 4:0:0:0: [sr0] tag#0 CDB: Read(10) 28 00 00 00 04 00 00 00 02 00
[    7.065780] print_req_error: I/O error, dev sr0, sector 4096
[    7.065807] Buffer I/O error on dev sr0, logical block 512, async page read
[    7.113776] sr 4:0:0:0: [sr0] tag#0 FAILED Result: hostbyte=DID_ERROR driverbyte=DRIV
ER_OK
[    7.113778] sr 4:0:0:0: [sr0] tag#0 CDB: Read(10) 28 00 00 00 ff fa 00 00 02 00
[    7.113780] print_req_error: I/O error, dev sr0, sector 262120
[    7.113807] Buffer I/O error on dev sr0, logical block 32765, async page read
[    7.129779] sr 4:0:0:0: [sr0] tag#0 FAILED Result: hostbyte=DID_ERROR driverbyte=DRIV
ER_OK
[    7.129782] sr 4:0:0:0: [sr0] tag#0 CDB: Read(10) 28 00 00 00 ff fc 00 00 02 00
[    7.129784] print_req_error: I/O error, dev sr0, sector 262128
[    7.177782] sr 4:0:0:0: [sr0] tag#0 FAILED Result: hostbyte=DID_ERROR driverbyte=DRIV
ER_OK
[    7.177786] sr 4:0:0:0: [sr0] tag#0 CDB: Read(10) 28 00 00 00 ff fc 00 00 02 00
[    7.177787] print_req_error: I/O error, dev sr0, sector 262128
[    7.177823] Buffer I/O error on dev sr0, logical block 32766, async page read
[    7.233904] Buffer I/O error on dev sr0, logical block 512, async page read
[    7.325778] Buffer I/O error on dev sr0, logical block 32576, async page read
[    7.373776] Buffer I/O error on dev sr0, logical block 512, async page read
[    7.421775] Buffer I/O error on dev sr0, logical block 32765, async page read
[   46.865299] sr 4:0:0:0: [sr0] tag#0 FAILED Result: hostbyte=DID_ERROR driverbyte=DRIV
ER_OK
[   46.865303] sr 4:0:0:0: [sr0] tag#0 CDB: Read(10) 28 00 00 00 ff fc 00 00 02 00
[   46.865305] print_req_error: I/O error, dev sr0, sector 262128
[   46.917675] sr 4:0:0:0: [sr0] tag#0 FAILED Result: hostbyte=DID_ERROR driverbyte=DRIV
ER_OK
[   46.917679] sr 4:0:0:0: [sr0] tag#0 CDB: Read(10) 28 00 00 00 ff fc 00 00 02 00
[   46.917681] print_req_error: I/O error, dev sr0, sector 262128
[   46.917686] Buffer I/O error on dev sr0, logical block 32766, async page read
[   46.923295] sr 4:0:0:0: [sr0] tag#0 FAILED Result: hostbyte=DID_ERROR driverbyte=DRIV
ER_OK
[   46.923299] sr 4:0:0:0: [sr0] tag#0 CDB: Read(10) 28 00 00 00 04 00 00 00 02 00
[   46.923301] print_req_error: I/O error, dev sr0, sector 4096
[   46.969796] sr 4:0:0:0: [sr0] tag#0 FAILED Result: hostbyte=DID_ERROR driverbyte=DRIV
ER_OK
[   46.969800] sr 4:0:0:0: [sr0] tag#0 CDB: Read(10) 28 00 00 00 04 00 00 00 02 00
[   46.969802] print_req_error: I/O error, dev sr0, sector 4096
[   46.969807] Buffer I/O error on dev sr0, logical block 512, async page read
[   47.015798] sr 4:0:0:0: [sr0] tag#0 FAILED Result: hostbyte=DID_ERROR driverbyte=DRIV
ER_OK
[   47.015803] sr 4:0:0:0: [sr0] tag#0 CDB: Read(10) 28 00 00 00 fe 80 00 00 3c 00
[   47.015805] print_req_error: I/O error, dev sr0, sector 260608
[   47.065796] sr 4:0:0:0: [sr0] tag#0 FAILED Result: hostbyte=DID_ERROR driverbyte=DRIV
ER_OK
[   47.065799] sr 4:0:0:0: [sr0] tag#0 CDB: Read(10) 28 00 00 00 fe 80 00 00 02 00
[   47.065801] print_req_error: I/O error, dev sr0, sector 260608
[   47.065806] Buffer I/O error on dev sr0, logical block 32576, async page read
[   47.117790] sr 4:0:0:0: [sr0] tag#0 FAILED Result: hostbyte=DID_ERROR driverbyte=DRIV
ER_OK
[   47.117792] sr 4:0:0:0: [sr0] tag#0 CDB: Read(10) 28 00 00 00 04 00 00 00 02 00
[   47.117793] print_req_error: I/O error, dev sr0, sector 4096
[   47.117795] Buffer I/O error on dev sr0, logical block 512, async page read
[   47.169791] sr 4:0:0:0: [sr0] tag#0 FAILED Result: hostbyte=DID_ERROR driverbyte=DRIV
ER_OK
[   47.169793] sr 4:0:0:0: [sr0] tag#0 CDB: Read(10) 28 00 00 00 ff fa 00 00 02 00
[   47.169794] print_req_error: I/O error, dev sr0, sector 262120
[   47.169796] Buffer I/O error on dev sr0, logical block 32765, async page read
[   47.185544] sr 4:0:0:0: [sr0] tag#0 FAILED Result: hostbyte=DID_ERROR driverbyte=DRIV
ER_OK
[   47.185548] sr 4:0:0:0: [sr0] tag#0 CDB: Read(10) 28 00 00 00 ff fc 00 00 02 00
[   47.185550] print_req_error: I/O error, dev sr0, sector 262128
[   47.237790] sr 4:0:0:0: [sr0] tag#0 FAILED Result: hostbyte=DID_ERROR driverbyte=DRIV
ER_OK
[   47.237792] sr 4:0:0:0: [sr0] tag#0 CDB: Read(10) 28 00 00 00 ff fc 00 00 02 00
[   47.237794] Buffer I/O error on dev sr0, logical block 32766, async page read
[   47.289789] Buffer I/O error on dev sr0, logical block 512, async page read
[   47.381792] Buffer I/O error on dev sr0, logical block 32576, async page read
[   47.429789] Buffer I/O error on dev sr0, logical block 512, async page read
[   47.477788] Buffer I/O error on dev sr0, logical block 32765, async page read
[   87.672928] sr 4:0:0:0: [sr0] tag#0 FAILED Result: hostbyte=DID_ERROR driverbyte=DRIV
ER_OK
[   87.672931] sr 4:0:0:0: [sr0] tag#0 CDB: Read(10) 28 00 00 00 ff fc 00 00 02 00
[   87.672933] print_req_error: I/O error, dev sr0, sector 262128
[   87.739437] sr 4:0:0:0: [sr0] tag#0 FAILED Result: hostbyte=DID_ERROR driverbyte=DRIV
ER_OK
[   87.739442] sr 4:0:0:0: [sr0] tag#0 CDB: Read(10) 28 00 00 00 ff fc 00 00 02 00
[   87.739444] print_req_error: I/O error, dev sr0, sector 262128
[   87.739449] Buffer I/O error on dev sr0, logical block 32766, async page read
[   87.746314] sr 4:0:0:0: [sr0] tag#0 FAILED Result: hostbyte=DID_ERROR driverbyte=DRIV
ER_OK
[   87.746318] sr 4:0:0:0: [sr0] tag#0 CDB: Read(10) 28 00 00 00 04 00 00 00 02 00
[   87.746320] print_req_error: I/O error, dev sr0, sector 4096
[   87.798940] sr 4:0:0:0: [sr0] tag#0 FAILED Result: hostbyte=DID_ERROR driverbyte=DRIV
ER_OK
[   87.798944] sr 4:0:0:0: [sr0] tag#0 CDB: Read(10) 28 00 00 00 04 00 00 00 02 00
[   87.798947] print_req_error: I/O error, dev sr0, sector 4096
[   87.798952] Buffer I/O error on dev sr0, logical block 512, async page read
[   87.851807] sr 4:0:0:0: [sr0] tag#0 FAILED Result: hostbyte=DID_ERROR driverbyte=DRIV
ER_OK
[   87.851813] sr 4:0:0:0: [sr0] tag#0 CDB: Read(10) 28 00 00 00 fe 80 00 00 3c 00
[   87.851815] print_req_error: I/O error, dev sr0, sector 260608
[   87.903683] sr 4:0:0:0: [sr0] tag#0 FAILED Result: hostbyte=DID_ERROR driverbyte=DRIV
ER_OK
[   87.903689] sr 4:0:0:0: [sr0] tag#0 CDB: Read(10) 28 00 00 00 fe 80 00 00 02 00
[   87.903691] print_req_error: I/O error, dev sr0, sector 260608
[   87.903696] Buffer I/O error on dev sr0, logical block 32576, async page read
[   87.953810] sr 4:0:0:0: [sr0] tag#0 FAILED Result: hostbyte=DID_ERROR driverbyte=DRIV
ER_OK
[   87.953815] sr 4:0:0:0: [sr0] tag#0 CDB: Read(10) 28 00 00 00 04 00 00 00 02 00
[   87.953817] print_req_error: I/O error, dev sr0, sector 4096
[   87.953822] Buffer I/O error on dev sr0, logical block 512, async page read
[   88.001810] sr 4:0:0:0: [sr0] tag#0 FAILED Result: hostbyte=DID_ERROR driverbyte=DRIV
ER_OK
[   88.001816] sr 4:0:0:0: [sr0] tag#0 CDB: Read(10) 28 00 00 00 ff fa 00 00 02 00
[   88.001818] print_req_error: I/O error, dev sr0, sector 262120
[   88.001824] Buffer I/O error on dev sr0, logical block 32765, async page read
live@RedFlag:~$