问题在于你硬盘的启动优先级高于光驱。

The problem is that your hard drive has a higher boot priority than your optical drive.

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开始之前，启动优先选择，这将允许创建e JB客户端JAR项目。

Before starting, turn on a preference that allows the creation of an EJB client JAR project.

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许多现代的BIOS包含了一个启动菜单，在这里你可以动态地修改设备的启动优先级。

Many modern BIOSes include a boot menu from where you can change the priority of your devices on the fly - try pressing the 'Escape' key or F12 when you first see something on the screen.

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