Bug 59158

 FreeBSD-5.1-CURRENT downloaded from current.freebsd.org will not
 install from the CD on an on-board Promise FastTrak100 IDE RAID
 controller. The motherboard is a Tyan Tiger LE. Two Western Digital
 WD800JB IDE drives are cabled to the on-board FastTrack100, each
 as primary master on its own channel.
 
 The install begins fine. SMP is detected and both CPUs are utilized.
 When asked which drive to partition, I pick ar0. From there I'm
 presented with the standard fdisk screen. I choose either "F" or
 "A" to use the entire drive. After moving to the disklabel editor,
 I select "A" for auto, then "Q" to quit. I pick my distribution
 sets (generally full sources and binaries but no X), select "yes"
 for installing the ports tree, choose install from CD-ROM, pick my
 CD-ROM drive and select "yes" at the "last chance" screen.
 
 From there I'm presented with a screen that says, 'Unable to find
 device node for /dev/ar0p1b in /dev! The creation of filesystems
 will be aborted." I'm then dropped to a window that says installation
 completed with some errors and returned to the initial /stand/sysinstall
 screen.
 
 I tried starting an emergency shell and attempted to make the missing
 devices by hand, but didn't see a way to make devices under 5.x.

How-To-Repeat:     Try installing on a Promise FastTrack100 IDE RAID controller.