Extend FAQ entry about lockfile errors
@@ -265,7 +265,7 @@ Yes, you can absolutely do so without any modifications. However, there is one k
### I am getting TemporaryErrors (Lockfile created, but doesn't exist)! What can I do?
-This error should only occur when you are using tusd inside VirtualBox. Please see the answer above for more details on when this can happen and how to avoid it.
+This error can occur when you are running tusd's disk storage on a file system which does not support symbolic links. These symbolic links are used to create lock files for ensuring that an upload's data is consistent. For example, this problem can happen when running tusd inside VirtualBox (see the answer above for more details) or when using file system interfaces to cloud storage providers (see https://github.com/tus/tusd/issues/257). We recommend you to ensure that your file system supports symbolic links, use a different file system, or use one of tusd's cloud storage abilities. If the problem still persists, please open a bug report.
### How can I prevent users from downloading the uploaded files?
