Mount the disk (the root slice) as read-only before running the fsck in the preen mode.
Mount the disk (the root slice) as read-only before running the fsck in the preen mode.

This force the flush of all pending writes to disk and thus put the disk in a consistent state.

The second effect of this change is that the file system can actually be recovered now, because otherwise with the root slice mounted as read-write, the fsck cannot write any changes.

pfsense/pfsense,NewEraCracker/pfsense,phil-davis/pfsense,dennypage/pfsense,pfsense/pfsense,dennypage/pfsense,NewEraCracker/pfsense,NewEraCracker/pfsense,phil-davis/pfsense,pfsense/pfsense,ptorsten/pfsense,NOYB/pfsense,NOYB/pfsense,NOYB/pfsense,pfsense/pfsense,ptorsten/pfsense,phil-davis/pfsense,dennypage/pfsense,ptorsten/pfsense,NewEraCracker/pfsense,dennypage/pfsense,phil-davis/pfsense