接下来您遇到的选项是检查介质表面-这里我们说的是CD介质表面，而不是硬盘表面。
Next you'll be given the option of checking the media surface — we're talking the CD media surface here, not the hard disk surface.
除非您怀疑引导盘有问题，否则不要选yes，因为检查介质表面要花很长的时间，而且大多数情况下这是不必要的。
Select yes only if you suspect a problem with the boot disk, because it takes a long time to check the media surface, and most of the time this is unnecessary.
如果需要根据适配器连接的链路伙伴或网络检查设置，介质速度是有用的，因为速度或双工不匹配会造成问题。
The media speed is useful if you need to verify the setting based on the link partner and network that the adapter is connected to, as a speed or duplex mismatch can cause problems.
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