Thank You for Your time and answer, Martin: >> Seems it's the same as FS checking at boot time, isn't? > >Should be. Did it say that it actually *fixed* problems? Was dumb. But the error gone from dmesg. >To make sure, you can try fsck.ext4 -fn from a livecd. It should not >find any problems anymore. I have no CD drive for now, and from usb I never saw the laptop was ever booting notwithstanding my multiple attempts.