kern/43262: install cdrom drops into debugger with Sun VirtualBox (vbox)

[george%galis.org@localhost]

>Number:         43262
>Category:       kern
>Synopsis:       install cdrom drops into debugger with Sun VirtualBox (vbox)
>Confidential:   no
>Severity:       critical
>Priority:       low
>Responsible:    kern-bug-people
>State:          open
>Class:          support
>Submitter-Id:   net
>Arrival-Date:   Wed May 05 19:55:00 +0000 2010
>Originator:     George Georgalis
>Release:        netbsd-5-1-RC1
>Organization:
>Environment:
>Description:
Sun VirtualBox is a general-purpose full virtualizer for x86 hardware.
http://www.virtualbox.org/wiki/VirtualBox

Unfortunately, a netbsd install drops to the netbsd debugger. There are 
extensive notes on the VirtualBox ticket system, including a trace:
http://www.virtualbox.org/ticket/3947

Some technical background:
http://www.virtualbox.org/wiki/VirtualBox_architecture

>How-To-Repeat:
VirtualBox binaries are available for many platforms, the application is 
intuitive, I've tried attaching release i386.iso installer and building 
netbsd-5-1-RC1 installer iso. They fail when detecting any of the available IDE 
drivers (PIIX3, PIIX4 or ICH6).
>Fix:
A workaround is described in the ticket above... after creating a netbsd 
instance and attaching an install cdrom, quit the gui application and boot the 
machine from command line: VBoxSDL --norawr0 --startvm netbsd

Not sure if this is an issue with NetBSD or VirtualBox, but a resolution or 
better workaround would benefit all. --- thanks