Howdy - What aborts? If by 'abort' you mean that the process of the system coming up ceases and you get dropped into a single user shell then that's exactly what should happen. Ok - at that point if a manual "fsck /dev/rra0f" (and you should be using the raw (rra) form of the device) works, then all you need to do is hit a ^D and the system will finish coming up to a multi user state. Hmmm - I think we'll need some more information before hazarding a guess as to what's not working right. The contents of /etc/fstab and the current disklabel would be good starting points. Well, yes, it will - by bypassing all filesystem checks. Usually that'll work ok - but it's not something to do after a crash or a power failure. Hmmm - a bad block? Shouldn't be related to anything in ra0f unless you've accidentally created overlapping partitions. If that were the case though I'd expect massive and widespread corruption. What was the error when the bad block was encountered? If this is an MSCP disk you'll need to find the MicroPDP-11 Formatter and see if it will revector the bad sector for you (BSD MSCP drivers can not do this - probably just as well because I've heard it's fiendishly difficult and if you get it wrong you've hosed your drive). Steven Schultz sms(a)wlv.iipo.gtegsc.com