disk. This is main reason why sysinstall presents SCSI CDROM to
available disks in Fdisk/Label menu. In addition, adding a blank
SCSI CDROM to the menu generates floating point exception in sparc64.
Disk_Names() just extracts sysctl "kern.disks". Why GEOM treats SCSI
CDROM as a disk is beyond me and that should be investigated.
For temporary workaround, ignore SCSI CDROM device.
PR: sparc64/72962
Tested by: R. Tyler Ballance < tyler AT tamu DOT edu>
MFC after: 1 week