The UNIX File System Check Program SMM:3-11 SUPER-BLOCK TO SUPPLY NEEDED INFORMATION SEE fsck(8). The super block has been corrupted. An alternative super block must be selected from among those listed by newfs (8) when the ﬁle system was created. For ﬁle systems with a blocksize less than K, specifying −b 32 is a good ﬁrst choice. INTERNAL INCONSISTENCYM Fsck’s has had an internal panic, whose message is speciﬁed as M. This should never happen. See a guru. CAN NOT SEEK BLK B (CONTINUE) Fsck’s request for moving to a speciﬁed block number B in the ﬁle system failed. This should never happen. See a guru. Possible responses to the CONTINUE prompt are: YES attempt to continue to run the ﬁle system check. Often, however the problem will persist. This error condition will not allow a complete check of the ﬁle system. A second run of fsck should be made to recheck this ﬁle system. If the block was part of the virtual memory buffer cache, fsck will terminate with the message Fatal IO error’’. NO terminate the program.