kern/118571: BTX issues when booting FreeBSD 7 from a USB CD-ROM

[Rudy]

>Number:         118571
>Category:       kern
>Synopsis:       BTX issues when booting FreeBSD 7 from a USB CD-ROM
>Confidential:   no
>Severity:       non-critical
>Priority:       high
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Wed Dec 12 07:20:03 UTC 2007
>Closed-Date:
>Last-Modified:
>Originator:     Rudy
>Release:        7.0-BETA4
>Organization:
MonkeyBrains
>Environment:
>Description:
A FreeBSD ISO does not boot via a USB CD-ROM for Supermicro (and other?) motherboards that use Intel CPUs.  

Sure this is an old problem... http://docs.freebsd.org/cgi/getmsg.cgi?fetch=78298+0+archive/2007/freebsd-stable/20070128.freebsd-stable
 http://lists.freebsd.org/pipermail/freebsd-stable/2007-May/035447.html
 http://lists.freebsd.org/pipermail/freebsd-questions/2007-March/143730.html
 http://lists.freebsd.org/pipermail/freebsd-qa/2006-September/000783.html

Sure would be nice if someone could fix the 'real mode' 'vm86' problem that plagues FreeBSD install disks but no other OS.  I am offering a $50 bounty to be paid to http://www.freebsd.org/donations/
if the standard ISO for FreeBSD 7.0-RELEASE addresses this problem.  In other words, if I can download the ISO, burn it to disk, and boot it off a a USB CD-ROM onto Supermicro hardware.
>How-To-Repeat:

Download the ISO for 7.0-BETA4
Check checksum  :)
Burn to disk
attempt to boot disk on USB-CDROM drive attached to a Supermicro Motherboard
 (eg the PDSML or PDSMi)


>Fix:
The only acceptable fix would be a new, working ISO on ftp.freebsd.org.


>Release-Note:
>Audit-Trail:
>Unformatted: