On 08/13/2011 11:56 PM, Anton Lukichjow wrote:

No files in a directory /sites/all/themes, the theme is displayed in Admin panel.

It may depend on what theme you are trying to remove. Are you speaking of one of the core themes (eg: Bartik and Garland)? They would certainly not be in the "sites/all/themes", "sites/default/themes" or "sites/SITEURL/theme" and would definitely still show up in the admin options, because they are core themes. To remove them, you would have to remove the files for the core themes that you don't want -- or less destructively, rename their .info files to .info.off (or some other fake file extension that isn't .info). This goes against one of the top rules of Drupal best practices; "don't hack core." If you do remove those themes, they will no longer show up on the admin page. However, they will come back with the next site update, since they are part of the core package. If you are committed to doing this, be aware that you gain little more than cleaning up a page nobody looks at after site development. Unless you are attempting to repackage/fork Drupal, all this approach really accomplishes in the end is ensuring that you do more work for every core security update. I do not recommend this course of action, but have had clients do this on there own, and it worked out okay for them. ~~nat