thank you. fyi, this is a recap of how it turned out, to my recollection. we took a power hit. video quit. changed to onboard video. machine failed to boot, but had video. switched back to video card. no video. took video card out reseated it. then the card worked, but fsck seemed to "get stuck" forever. i tried rebooting a few times with the same result. so i figured the disk was bad or i would at least need to reload the os. i really wanted to recover my configuration files and my home directory so i put the disk into a different machine and did the fsck on it. this however went smoothly so i decided to try the drive again, in the mill. what do you know, i have bdi-4.51 running again. it hasn't caused any trouble since, so i will leave well enough alone. of course, none of this makes sense. following the video card events perhaps reseating the hard drive did the trick??? but, i will save your email for the inevitable future. djs Paul wrote: Hi David Sorry about the delay - Been out of the country without internet access... On Wednesday 30 April 2008, David Szakovits wrote: i was running bdi 4.51 but had a hard drive crash. fsck seems to have endless errors. so looks like i have to reload the os. the mill was doing everything i need it to so it makes sense just to return it that configuration and avoid any experimentation. but i am wondering if i can run emc under a recent release of ubuntu rather than load bdi4emc onto a new disk. You can use just about any distribution to run EMC - I used to use Red Hat then another RPM based distro before some real nasty upgrade issues bit hard. As long as you have a 2.6.xx series realtime kernel (using the RTAI patches) installed, there shouldn't be any major problem. You will need to compile from the sources (which can be found on the CD) to ensure correct linkage to the installed libraries, kernel, and RTAI versions. Regards, Paul. _______________________________________________ Bdi4emc-help mailing list [1][email protected] [2]https://lists.ourproject.org/cgi-bin/mailman/listinfo/bdi4emc-help References 1. mailto:[email protected] 2. https://lists.ourproject.org/cgi-bin/mailman/listinfo/bdi4emc-help