internal HD was called to have problems + speed wasn´t too high
plus: the speed is extraordinary faster! now i got 16GB RAM, and this notebook-HD with this 8GB SSD-memory speeds most of the apps nearly as quick as a "real" SSD! - to me its the perfect combination, imagining that i spend 550 euros on the mac mini (and that was 1 year ago), now 65 euros on 16 GB, plus 100 euros for the HD - a really fast Mac for just 715 euros! that means about 800-900 $, and as you know: all this is much cheaper in the states! plus i can use two really good IPS-screens, guess much better than the iMac-screens (ok: i dont have the quad core-power, but in fact i dont need that til now!)…
used your guide, thanks a lot! - only in one step i couldnt get off, i think it was the fan, without unscrewing the screw (that was called to get off a few steps later).