之前聽說Windows 10上面可以裝Linux了，一時興起，就搗鼓了起來，長時間不用了，結果又忘記root密碼。哎，老了，記不住事情了。所以就上網查了一下如何卸載Linux子系統，再寫一篇筆記吧，免得以后又忘記了。

打開CMD，輸入lxrun，就會提示這條命令的使用方法，見下：

C:\Users\admin>lxrun

Warning: lxrun.exe is only used to configure the legacy Windows Subsystem for Linux distribution.

Distributions can be installed by visiting the Microsoft Store:

https://aka.ms/wslstore

Usage:

/install - Installs the subsystem

Optional arguments:

/y - Do not prompt user to accept or create a subsystem user

/uninstall - Uninstalls the subsystem

Optional arguments:

/full - Perform a full uninstall

/y - Do not prompt user to confirm

/setdefaultuser - Sets the default subsystem user. If the user account does not exist it will be created.

Optional arguments:

username - Supply the username

/y - If username is supplied, do not prompt to create a password

輸入：lxrun /uninstall 就可以開始卸載原來的Linux子系統了。

C:\Users\admin>lxrun /uninstall

Warning: lxrun.exe is only used to configure the legacy Windows Subsystem for Linux distribution.

Distributions can be installed by visiting the Microsoft Store:

https://aka.ms/wslstore

This will uninstall Ubuntu on Windows.

This will remove the Ubuntu environment as well as any modifications and new applications with the exception of:

C:\Users\admin\AppData\Local\lxss\home

C:\Users\admin\AppData\Local\lxss\root

Type "y" to continue: y

Uninstalling...

再輸入bash查看一下，驗證Ubuntu已經被卸載。

C:\Users\admin>bash

Windows Subsystem for Linux has no installed distributions.

Distributions can be installed by visiting the Microsoft Store:

https://aka.ms/wslstore

Press any key to continue...

接下來安裝Ubuntu Linux，輸入命令：lxrun /install

C:\Users\admin>lxrun /install

Warning: lxrun.exe is only used to configure the legacy Windows Subsystem for Linux distribution.

Distributions can be installed by visiting the Microsoft Store:

https://aka.ms/wslstore

This will install Ubuntu on Windows, distributed by Canonical and licensed under its terms available here:

https://aka.ms/uowterms

Type "y" to continue: y

Downloading from the Microsoft Store... 100%

Extracting filesystem, this will take a few minutes...

Error: 0x800706ba

擦，有Error，本機電腦沒有權限？查了一下，我確實沒有admin權限。但是我重試了一下，結果這次成功了。

不過又在網上查了一下，如果你重試了，還是不行，請參考下面的方法有可能解決你的安裝失敗問題：

在下面的啟用或關閉Windows功能里啟用適用于Linux的Windows子系統，然后再試一遍吧。

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