How do i run a fsck command on a partition (disk0s4)?
I tried »fsck -fy« in single-user-mode but it only checks the boot partition (disk0s2) which is ok. »fsck -fy /dev/disk0s4« does not work: »fsck usage: fsck [-fdnypq] [-l number]«
(I ran diskutil and Disc Utility before but it could not verify or repair the partition. »OSX can´t repair the disk. … backup, reformat …« after the boot.)
Many Thanks, Anna