If the mysql log - /var/log/mysqld.log (fedora distro) - says: 090728 02:56:59 mysqld started 090728 2:56:59 [ERROR] /usr/libexec/mysqld: Can't find file: './mysql/host.frm' (errno: 13) 090728 2:56:59 [ERROR] /usr/libexec/mysqld: Can't find file: './mysql/host.frm' (errno: 13) 090728 2:56:59 [ERROR] Fatal error: Can't ...