# Warning Folder X:/ Does Not Exist

**URL:** <https://forum.duplicati.com/t/warning-folder-x-does-not-exist/10894>\
**Category:** Support\
**Created:** [October 8, 2020, 1:16pm UTC](https://forum.duplicati.com/t/warning-folder-x-does-not-exist/10894 "2020-10-08T13:16:19Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![drwtsn32](https://forum.duplicati.com/user_avatar/forum.duplicati.com/drwtsn32/32/2591_2.png) [@drwtsn32](https://forum.duplicati.com/u/drwtsn32)\
**Post date:** [October 8, 2020, 7:29pm UTC](https://forum.duplicati.com/t/warning-folder-x-does-not-exist/10894/2 "2020-10-08T19:29:42Z")

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A similar question was asked recently, and this was my suggestion:

> [@How to only write to external USB drive on Linux when it's attached?](https://forum.duplicati.com/t/how-to-only-write-to-external-usb-drive-on-linux-when-its-attached/10414/3):
>
> You could use --run-script-before, have it check for the presence of the drive, and then exit the script with a certain errorlevel to prevent the backup from running. The different error levels are shown here:

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