Also make sure that there isn't another such writable line below that one where it declares it as no. A lot of people end up with Samba configurations that make this mistake because the config file has crazy amount of commentary that goes on forever.
Finally, ensure that whatever user you are logging into this samba server as has write permissions to the folder you're trying to write to. If you're not using user based security, you should. Public userless shares are a bad idea.
|