Sunfire x4200 Solaris 6/06 install/patch update problem - corrupts OS!

Hi

this is frusterating, I have a x4200, which when installing 'end user' solaris 10, boots/works just fine.

As part of best practice, I use sun's 'update manager' and it goes and downloads and installs. As normal a 'reboot' is required to finish installing some updates, and when it does this, after it installs and tries to reboot, i get a nasty error:

panic: cannot mount boot archive

I've done NOTHING besides load the base OS and patch, no other customization.

Why is this doing this?

I've tried to rebuild the boot archive info via:

bootadm update-archive -R /a

but this still fails, and my only option is to reboot.

anyone else seen/encountered this?

[727 byte] By [mc2104dave] at [2007-11-26 10:41:52]