OK. Your AW51B is a Sparc Station 5. That is the hardware type. SUN Solaris is a set of software. The Solaris version the AW51B was built with is Solaris 2.5.1. When you get a new hard drive, it becomes more complicated. There are a few, specific hard drives the Foxboro system was setup to run on. All are SCSI hard drives with the SCA-80 type of plug to mount inside the Sparc 5. Some are 4.5 GB and others 9.0 GB. Each drive used in a SUN Sparc system has an identifier that is read by software. The drive identifier must be in the set of those used by Foxboro, or your software won't load; you will get an error called "ft_get_sz" during the early part of the software intallation. I don't have list of the specific drives, and I dont know if the list is available. I have seen it in the code of the ia_install script on the installation CD. Using the Solaris utility program called "format", it is possible to reprogram the identification string of the hard drive. We have set up drives larger than 9.0 GB to look to the Foxboro system as 9.0 GB disks, and with the proper identification string so that they will load. Also, there is a diskette from Foxboro (I think it is called Pre-Install Utilies) which either does this change, or allows the installation on other disks. I have not used this utility. Good luck. Regards, William C. Ricker FeedForward, Inc. Marietta, GA USA 770.426.4422 wcricker @ feedforward.com _______________________________________________________________________ This mailing list is neither sponsored nor endorsed by Invensys Process Systems (formerly The Foxboro Company). Use the info you obtain here at your own risks. Read http://www.thecassandraproject.org/disclaimer.html foxboro mailing list: //www.freelists.org/list/foxboro to subscribe: mailto:foxboro-request@xxxxxxxxxxxxx?subject=join to unsubscribe: mailto:foxboro-request@xxxxxxxxxxxxx?subject=leave