how to make jupyterlab see other directory

1// To open jupyter lab with new directory 
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4jupyter lab --notebook-dir "C:\name_of_dir"

1There are two ways to do even though they have only very small difference. Follow the way marneylc suggested above: i.e.
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31) Open "Anaconda Prompt" and type jupyter notebook --generate-config
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52) You find the file in C:\Users\username\.jupyter\jupyter_notebook_config.py
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73) Change the line of #c.NotebookApp.notebook_dir = '' to c.NotebookApp.notebook_dir = 'c:\test\your_root\'
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94) Then, go to the shortcut of Jupyter Notebook located in C:\Users\User_name\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Anaconda3 (64-bit)
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115) Do the right click and go to the Properties
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136) In the Target field, remove %USERPROFILE% as stenlytw suggested above.
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157) Then, In the field of Start in, type the same directory of c:\test\your_root\ in jupyter_notebook_config.py
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178) Done!
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19As the simpler way, after step 3, go to C:\Users\User_name\Anaconda3\Scripts
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214-2) You can see the file of jupyter-notebook.exe and click it.
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235-2) Then, the Jupyter start the folder you specified in jupyter_notebook_config.py. So make the shortcut of this file.
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256-2) Done.