A friend of mine gave me an old mac mini, the white one, i guess from 2007 or something. It has Mac OS 10.x installed (actually it has 3 versions installed for whatever reason).
The problem is that he has no idea what his user name and passwords are.
So I would like to re-install a fresh OS and setup the mac mini.
It is not the first time, that I do this, so I do press for sure the right keys while starting up.
I tried booting the system holding down the
apple key + r without success. The system will boot into the primary installation.
Command + Apple + r it is the same.
I can reset VRAM using Command
Command + Apple + r + p and I hear the chime sound.
Pressing any other combinations doesn't let me hear any sounds.
So I wondered and created a bootable stick with MAC OS Sierra on it. Just to make sure my old mac mini can handle it.
While booting up and pressing
command I can choose between the installed Versions of MAC OS or
install Sierry from USB.
When I choose to install from USB the Mac Mini will simply boot into the installed Mac OS.
I remember that on an old windows PC I wasn't able to install from USB even though he recognized the USB Stick. I had to do that from DVD / CD. What do you think, do I have to use a DVD/CD to finally install any OS?
Since I don't don't have the option to burn a disc here I wasn't able to try out yet. Maybe there is another solution?