The CD is added to the file system and the CDROM device is locked so that it cannot be accidentally ejected.

CD 就会被添加到文件系统中，CDROM 设备会被锁定以使它不会被意外弹出。

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To specify hard disks, use -hda, -hdb, -hdc, and -hdd to refer to Parallel ATA (PATA) hard disks, and -cdrom to identify a CD or DVD image file or device.

为指定硬盘，使用- hda、- hdb、- hdc和- hdd来引用Parallel AT a (PATA)硬盘，- cdrom指定cd或dvd镜像文件或设备。

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The first two instruct devfsd to make a /dev/cdrom symlink appear when the /dev/cdrom/cdrom0 device is registered.

头两行告诉 devfsd ，当注册 /dev/cdrom/cdrom() 时，使 /dev/cdrom 符号链接出现。

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