# Trouble writing to SMB files/directories

**URL:** <https://discourse.nodered.org/t/trouble-writing-to-smb-files-directories/76659>\
**Category:** General\
**Created:** [17 March 2023 10:30 UTC](https://discourse.nodered.org/t/trouble-writing-to-smb-files-directories/76659 "2023-03-17T10:30:58Z")\
**Posts on this page:** 1\
**Showing post:** 7

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**Author:** ![bwims](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/bwims/32/64907_2.png) [@bwims](https://discourse.nodered.org/u/bwims)\
**Post date:** [18 March 2023 10:35 UTC](https://discourse.nodered.org/t/trouble-writing-to-smb-files-directories/76659/7 "2023-03-18T10:35:22Z")

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I did a search for drive letter mappings and found this, which implies it is a general problem

[shared folders in windows](https://discourse.nodered.org/t/shared-folders-in-windows-10/14655)

and this

[Node-red running on Windows accessing File on NAS](https://discourse.nodered.org/t/node-red-running-on-windows-accessing-file-on-nas/33292/2)

and no success other than using a UNC, so I guess that clears it up for me.

I suggest an addition to the document [Running on Windows](https://nodered.org/docs/getting-started/windows) which includes the little wrinkles you might come across actually running **flows** on Windows, rather than just getting Node Red running on Windows.

@knolleary  
The drive letter concept is (sadly considering Windows NT came from Vax/VMS) an inherent part of Windows. Using them for mapped drives clearly doesn't work, so I do think a worked example of using the UNC notation (preferably with forward slashes) ought to be included in that document.

Thanks!

B.

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