I have just delete 4.1 go files from my desktop and after empty the trash. And now my / directory is up now to 100% in use. I cant start anymore Ubuntu. But i have access to safemode to clean the system check fsdisk etc... but how i can free space from my system partition?
UPDATE: my problem wasnt the deleted files, but the real size of / directory. It was out of memory so my ubuntu cannot be started correctly anymore.