I recently bought a SCSI disk to use with FreeBSD 4.6.2, and am experiences the same string of issues described here in 2000: http://www.geocrawler.com/mail/msg.php3?msg_id=3545516&list=168 I'm requesting that libdisk be updated to handle 1024 bytes/sector disks, or least do something more useful than throw a segmentation fault in the presence of one. How-To-Repeat: 1. Start with 1024 bytes/sector disk 2. Use fdisk within sysinstall to attempt to update disk record 3. Segmentation fault happens when writing the record