Hello Mister-X, glad to see you on Mozilla Support Forum.

You can turn on Bookmarks toolbar by following steps:-

• Click the menu button and choose Customize.

• To turn on Bookmarks toolbar: Click the Toolbars dropdown menu at the bottom of the screen and choose the toolbars you want to display.

• Click the Done button.

Thank You for raising your question on Mozilla Support Forum.

I mean in about:config

I mean in about:config

Hello Mister-X,

There is no preference on the about:config page that will enable the bookmarks toolbar.

You asked for the bookmark URL;   could it be that you are talking about these (?) :

chrome://browser/content/places/places.xhtml

chrome://browser/content/places/bookmarksSidebar.xhtml

(edit : typo)

no i mean the bookmark toolbar in the attachment

no i mean the bookmark toolbar in the attachment

Shashank Shekhar explained how to enable the Bookmarks Toolbar .....

It's also explained in this article :

https://support.mozilla.org/en-US/kb/bookmarks-toolbar-display-favorite-websites

(in my post I merely wondered about the URL you were referring to)

yes but it is not possible to enable the bookmark toolbar in about:config ?

yes but it is not possible to enable the bookmark toolbar in about:config ?

Like I said earlier :   there is no preference on the about:config page that will
enable the bookmarks toolbar.

If you don't believe me;   see for yourself :

Type in the address bar   about:config   and press Enter.
(ignore the warning   -   but you probably already know the drill)

Type in the search bar :   bookmarks   and look for something like :

"bookmarks.toolbar.enabled"