Thank you to all who responded. All of your suggestions gave me a variety of options to chose from, and that's what I've been doing all morning. Here are the summary of the suggestions and what I found out. From a Foxboro person in the Systems Integration Lab: >boot from CDROM (I'm assuming you're already doing that) >tar in the K0175SN diskette contents (version E and later support the >Seagate ST38410A hard drive) >run this command : form_disk ESP0 SCSI0 <machine type> where <machine type> >is AW51, AP51, or WP51 This doesn't work. format still says that the drive has a bad magic number. From Ron Deen: >From my SCSI experience I remember this after installing a drive from >"stock" that did not have any partition table at all. >Did you try to do a format? Now we're getting somewhere. Ron's reference to the partition table gets me down the road a bit further than where I was. And Frits Schouten wrote, in a long, comprehensive note: >Define a partition table. > >Enter "part" at the "format>" prompt and a new prompt appears. >Part> >Select modify and use all free hog and default partition sizes. (all but >backup being 0) >Save this partition and quit from the partition definition. This provides the last bit of information I needed. Ron Deen was right in that there's no partition information on this virgin Seagate drive. I started 'format' (the one on the 6.2 CD-ROM works fine) and went to define the partition table like Frits suggested. I selected "Use all free hog" and accepted all the default partition information, saved the partition table. At this point, I quit out of 'format' and ran 'ia_install' in the /tmp directory, which was put there by the Preinstall diskette (K0175SN-F). Bingo! The drive is properly formatted and everything is hunky-dory. Now I just have to do the same thing to the other 13 hard drives. Thanks everybody. I'll try to roll this into the Cassandra FAQ somehow. It's great to have this kind of resource at our disposal. Duc -- Duc M. Do Dow Corning Corp. Carrollton Plant Carrollton, KY, US ________________________________________________________________________ This email has been scanned for all viruses by the MessageLabs SkyScan service. For more information on a proactive anti-virus service working around the clock, around the globe, visit http://www.messagelabs.com ________________________________________________________________________ ___________________________________________________________________ This list is neither sponsored nor endorsed by The Foxboro Company. Use the information obtained here at your own risk. For disclaimer, see http://www.thecassandraproject.org/disclaimer.html#maillist list info: //www.freelists.org/list/foxboro subscribe: mailto:foxboro-request@xxxxxxxxxxxxx?subject=join unsubscribe: mailto:foxboro-request@xxxxxxxxxxxxx?subject=leave