install/43696: 5.1_RC3 Install on large disks fails

[rnestor%mac.com@localhost]

>Number:         43696
>Category:       install
>Synopsis:       5.1_RC3 Install on large disks fails
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    install-manager
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Mon Aug 02 13:50:00 +0000 2010
>Originator:     Bob Nestor
>Release:        5.1_RC3
>Organization:
>Environment:
5.1_rc3 (31-Jul-2010 build) amd64
>Description:
While sysinstall now recognizes large disks, in this case a 1.5TB Seagate, it 
fails when it tries to partition the disk.  If the disk is partitioned into 
256M (/), 1024M (swap), 256M (/var), 500G (/home) and the remainder to /usr, 
the /home and /usr partitions will be reported as extending beyond the end of 
the physical disk and the installation will either hang or fail with an error 
message.
>How-To-Repeat:

>Fix: