не загружается UBUNTU

не загружается ОС пишет если запустить recovery mode : /dev/sda5: UNEXPECNED INCONSISTENCY; RUN fsck MANUALLY (i.e.,without -a or -p options) mountall: fsck / [число] terminated with status 4 Skipping / at user request fsck from util-linux-ng 2.16 /dev/sad5 contains a file system with erroes, check forced