通过这些通用的 驱动器接口，您就可以将 SCSI 命令直接发送到 SCSI 设备，而不需要经过在 SCSI 磁盘上创建（并装载到某个目录）的文件系统。
With these generic driver interfaces, you can directly send SCSI commands to SCSI devices, bypassing a file system that is normally created on a SCSI disk and mounted under a directory.
安装了linux设备驱动程序，然后并不需要重启系统的原因是，我们可以在不用重启动操作系统的基础下重新配置驱动，载入或者是卸掉它们。
The reason that Linux device drivers lead to less rebooting is that we can reconfigure, load or unload them without restarting the system.
除非正在编写诸如设备驱动程序的应用程序，否则应不需要修改对齐方式。
Unless you are writing an application such as a device driver, you should not need to modify the alignment.
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