The problem is simple I use the webdav Plugin and works fine, but I need to change the only data disk for one bigger, so I need to disable services that use shared folders to finally can dismount Data Disk.
with other plugin like TFTP I can select none as shared folder to avoid have a reference folder that implies not dismount data disk, but actual implementation of webdav can not permit to use this "none" folder, so I need to de-install to change the disk and then reinstall webDAV and configure properly.
I think is a good addon to next revision of the pluggin to add the "none" option to the dropdown menu of shared folders to share with webDAV to use in this case.
Thanks to developers.
Please consider it.