Learned from Microsoft? Dos scandisk tries to fix the software and always made a mess. Even had troubles to reformat the hard disk drive after failure to correct all the errors.

Eventually, Microsoft windows scandisk changed tactics and reinstalls corrupted files from compressed library of their operating system. It restores perfectly

Fsck is not only not perfect, it depends on ext2, ext3 or reiser4fs. So, give up fsck. Do not use fsck! Always have a cd or dvd copy of your operating system. Ready to reinstall from your permanent copy of operating system.

Backup your data, often; as insurance because reinstall will get rid of all corruption, which is your data fragmentations.