我使用的是一台 16 到 18 年的笔记本电脑，一台 Clevo Zeus M3CW，我最近在其上安装了 antiX Linux 19.3。内核版本为4.9.235（针对486编译）。
现在，每当我启动时，内核都会抱怨来自设备/dev/sr0（我的笔记本电脑的内置 CD-ROM）的 I/O 错误。lsblk关于该设备的说明如下：
# lsblk -o +VENDOR,MODEL | head -1 ; lsblk -o +VENDOR,MODEL | grep sr0
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT VENDOR MODEL
sr0 11:0 1 1024M 0 rom TEAC DW-224E-A
驱动器是空的 - 里面没有 CD。
稍后，当系统运行时，我会收到无数dmesg条目，如下所示：
[ 53.250051] sr 1:0:0:0: [sr0] tag#0 unaligned transfer
[ 53.250056] sr 1:0:0:0: [sr0] tag#0 unaligned transfer
[ 53.250066] sr 1:0:0:0: [sr0] tag#0 unaligned transfer
[ 53.250071] sr 1:0:0:0: [sr0] tag#0 unaligned transfer
[ 53.250076] sr 1:0:0:0: [sr0] tag#0 unaligned transfer
还有这个：
[ 53.312725] REISERFS warning (device sr0): sh-2006 read_super_block: bread failed (dev sr0, block 16, size 512)
[ 53.312746] sr 1:0:0:0: [sr0] tag#0 unaligned transfer
[ 53.312754] REISERFS warning (device sr0): sh-2006 read_super_block: bread failed (dev sr0, block 128, size 512)
[ 53.359602] sr 1:0:0:0: [sr0] tag#0 unaligned transfer
[ 53.359617] EXT4-fs (sr0): unable to read superblock
[ 53.405593] sr 1:0:0:0: [sr0] tag#0 unaligned transfer
[ 53.405606] EXT4-fs (sr0): unable to read superblock
[ 53.464594] sr 1:0:0:0: [sr0] tag#0 unaligned transfer
[ 53.464608] EXT2-fs (sr0): error: unable to read superblock
[ 53.533449] sr 1:0:0:0: [sr0] tag#0 FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
[ 53.533461] sr 1:0:0:0: [sr0] tag#0 Sense Key : Medium Error [current]
[ 53.533478] sr 1:0:0:0: [sr0] tag#0 Add. Sense: Unable to recover table-of-contents
[ 53.533490] sr 1:0:0:0: [sr0] tag#0 CDB: Read(10) 28 00 00 00 00 00 00 00 02 00
[ 53.533516] SQUASHFS error: squashfs_read_data failed to read block 0x0
[ 53.533528] squashfs: SQUASHFS error: unable to read squashfs_super_block
还有这些：
[ 2852.951421] sr 1:0:0:0: [sr0] tag#0 FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
[ 2852.951431] sr 1:0:0:0: [sr0] tag#0 Sense Key : Medium Error [current]
[ 2852.951444] sr 1:0:0:0: [sr0] tag#0 Add. Sense: Unable to recover table-of-contents
[ 2852.951453] sr 1:0:0:0: [sr0] tag#0 CDB: Read(10) 28 00 00 07 ff fc 00 00 02 00
[ 2852.951458] blk_update_request: 1680 callbacks suppressed
[ 2852.951462] blk_update_request: I/O error, dev sr0, sector 2097136
[ 2852.951509] sr 1:0:0:0: [sr0] tag#0 unaligned transfer
[ 2852.951514] blk_update_request: I/O error, dev sr0, sector 2097136
[ 2852.951521] buffer_io_error: 1670 callbacks suppressed
[ 2852.951525] Buffer I/O error on dev sr0, logical block 2097136, async page read
[ 2852.951540] sr 1:0:0:0: [sr0] tag#0 unaligned transfer
[ 2852.951544] blk_update_request: I/O error, dev sr0, sector 2097137
[ 2852.951550] Buffer I/O error on dev sr0, logical block 2097137, async page read
[ 2852.951563] sr 1:0:0:0: [sr0] tag#0 unaligned transfer
我还应该注意到，如果我插入 CD，它会自动安装并读取良好。
我的问题：
- 是什么让内核
/dev/sr0一直尝试读取？特别是在引导时，当/etc/fstabgrub 配置中没有也没有提到它时。 - 我怎样才能让内核放弃这个设备？从一开始还是在失败了几次之后？