During boot my laptop says:fsck died with status code 4The man page tells me:The exit code returned by fsck is the sum of the following conditions:[..]4    - File system errors left uncorrectedWhen I try to repair the errors as root, fsck says that my disk is clean:$ fsck /dev/sda1/dev/sda1, clean [and some things about available blocks]How can I repair my disk?
fcsk died with status code 4
fsck
Try the -y option. From fsck manual:-y For some filesystem-specific checkers, the -y option will cause the fs-specific fsck     to always attempt to fix any detected filesystem corruption automatically. Some- times an     expert may be able to do better driving the fsck manually. Note that not all filesystem-specific checkers implement this option. In particular fsck.minix(8) and fsck.cramfs(8) does not support the -y option as of this writing.