I've tried using the commands listed in the FAQ at https://www.codeweavers.com/support/wiki/linux/faq/symlinkbottles and it doesn't work.
I get this:
$ mv ~/.cxoffice/Force/ /media/robins80/Drobo2/cxoffice mv: cannot create symbolic link '/media/robins80/Drobo2/cxoffice/dosdevices/c:': Invalid argument mv: cannot create symbolic link '/media/robins80/Drobo2/cxoffice/dosdevices/z:': Invalid argument mv: cannot create symbolic link '/media/robins80/Drobo2/cxoffice/dosdevices/com1': Invalid argument mv: cannot create symbolic link '/media/robins80/Drobo2/cxoffice/dosdevices/com2': Invalid argument mv: cannot create symbolic link '/media/robins80/Drobo2/cxoffice/dosdevices/com3': Invalid argument mv: cannot create symbolic link '/media/robins80/Drobo2/cxoffice/dosdevices/com4': Invalid argument mv: cannot create symbolic link '/media/robins80/Drobo2/cxoffice/dosdevices/com5': Invalid argument mv: cannot create symbolic link '/media/robins80/Drobo2/cxoffice/dosdevices/com6': Invalid argument mv: cannot create symbolic link '/media/robins80/Drobo2/cxoffice/dosdevices/com7': Invalid argument mv: cannot create symbolic link '/media/robins80/Drobo2/cxoffice/dosdevices/com8': Invalid argument mv: cannot create symbolic link '/media/robins80/Drobo2/cxoffice/dosdevices/com9': Invalid argument mv: cannot create symbolic link '/media/robins80/Drobo2/cxoffice/dosdevices/d::': Invalid argument mv: cannot create symbolic link '/media/robins80/Drobo2/cxoffice/dosdevices/e::': Invalid argument mv: cannot create symbolic link '/media/robins80/Drobo2/cxoffice/dosdevices/f::': Invalid argument mv: cannot create symbolic link '/media/robins80/Drobo2/cxoffice/dosdevices/g::': Invalid argument mv: cannot create symbolic link '/media/robins80/Drobo2/cxoffice/dosdevices/g:': Invalid argument mv: cannot create symbolic link '/media/robins80/Drobo2/cxoffice/dosdevices/y:': Invalid argument
Is there some other way to create bottles on an external drive?
