当您进一步了解操作系统的工作原理时，您可能会对系统完全进入睡眠模式之前发生的事情感到好奇。有鉴于此，今天的超级用户问答帖子回答了一位好奇读者的问题。

今天的问答环节是由SuperUser提供的，SuperUser是Stack Exchange的一个分支，是一个由社区驱动的问答网站分组。

问题

超级用户阅读器Ydob Emos想知道Windows 10在睡觉前会向驱动器写入什么：

I have noticed that my Windows 10 laptop takes around six seconds to go to sleep, during which the SSD’s activity LED is on. I imagine that Windows is writing something to the SSD before going to sleep.

I remember my Linux systems going to sleep instantly when I pressed the sleep button, which makes me wonder if I can do the same with Windows 10.

Given that Hybrid Sleep is disabled, what does Windows 10 do with my drive before going to sleep and is it necessary?

Windows 10在睡觉前会向驱动器写入什么内容？

答案

超级用户贡献者DavidPostill为我们提供了答案：

I imagine that Windows is writing something to the SSD before going to sleep.

That is correct. If there is any data waiting in the disk’s write cache, it must be written to the disk before the disk is powered off. Note that disk caching can be disabled so that everything is written to the disk immediately. This ensures that data is not lost as a result of a power failure, but it does reduce performance.

Turn Disk Write Caching On or Off:

1. Right-click My Computer, then click Properties.
2. Click the Hardware tab, then click Device Manager.
3. Expand Disk Drives.
4. Right-click the drive on which you want to turn disk write caching on or off, then click Properties.
5. Click the Policies tab.
6. Click to select or clear the Enable write caching on the disk check box as appropriate.
7. Click OK.

Source: How To: Manually Turn Disk Write Caching On or Off [Microsoft]

有什么要补充的解释吗？在评论中发出声音。想从其他精通技术的Stack Exchange用户那里了解更多答案吗？在这里查看完整的讨论主题。

图片来源：Device Manager屏幕截图–DavidPostill（超级用户）