install/48860: Installation i386 on Sony VGN-P11Z: no root device / boot device: unknown

[H_Muehlmeier%gmx.de@localhost]

>Number:         48860
>Category:       install
>Synopsis:       Installation i386 on Sony VGN-P11Z: no root device / boot 
>device: unknown
>Confidential:   no
>Severity:       critical
>Priority:       high
>Responsible:    install-manager
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Sat May 31 21:20:00 +0000 2014
>Originator:     Helge Muehlmeier
>Release:        NetBSD 6.1_STABLE
>Organization:
        
>Environment:
NetBSD 6.1_STABLE i386
>Description:
Trying to boot Sony VGN-P11Z for installation results in "boot device: 
<unknown>" and "root device: (empty space)". This is happening while using 
NetBSD-6.0.5 i386 too (via CD or USB-flashi external drives). If I use NetBSD 
5.2.2 I can boot the computer via CD with the external DVD-drive as expected 
and I'm able to beginn the installation. No such stop in NetBSD-5.2.2  
>How-To-Repeat:
Try to boot a Sony VGN-P11Z (maybe other computers, don't know) and try to 
install NetBSD-6.x. With NetBSD-5.2.2 you would be able to start installation 
(boot into install- routine works fine)
>Fix:
don't know

>Unformatted: