Morning Stefan, Your message took me aback. I just finished an optical drive upgrade in my Cube last night so I would be able to install Tiger. After reading your message I immediately dropped in the installation disk and tried to install. I was able to get all of the way to the screen to perform the update on my system (I wasn't ready to yet). My Cube has the latest firmware. I'm running a Gigadesign 1.2GHz upgrade, and I have a Radeon dual-head video card. C-ubeistan may be right on the money about the DVD. That's the upgrade I installed. I'm sure you already have, but you might want to check Gigadesign's site to see if they have instructions. And you might even give the office a call. When I was installing my upgrade, they were in on a Saturday morning. I haven't heard of this "no trespassing" icon. Got my fingers crossed for you. Fred On 6/18/05 5:39 AM, "Stefan" <no-spam at punkt-x.de> wrote: > Hello Cube-friends, > > > just tried to install Panther on my cube. > > Automatic restart from Tiger-DVD doesn't work. > When starting with pressed "C", booting begins from DVD, with grey > screen, Apple and rotating lines. > After a while (still grey screen, rotating lines) the apple is > followed by a "no trespassing"-icon. > > Does anybody have ideas about reaseons or - better - solutions? > > My Cube has last firmware, a Gigadesigns 1.5 GHz (7457) Upgrade and a > GeForce 4 MX. > > > Hopefully > stefan