I have a Mac Mini with Morphos Keyfile, it ran before as a Morphos only System without any trouble. Today I reformatted the HD with 3 partitions: Boot (I let it as it was), Morphos, and MacOS X. I've installed "Tiger" on the third partition (that was my purpose with that game). My Morphos 2.7 will be recognized by MacOS X without any trouble. But when I try to boot from the CD, the computer starts, I get a grey screen with some Morphos text, the the monitor gets dark (no signal), I hear the CD for some time and then nothing. I'm not able to boot into the installing CD.

"Boot" is, as before, 64 Mb in MacOS File System, the other two partition are in HFS Extended. Tiger, installed on the third partition, is working fine.

Any ideas what the problem could be?

There is that crap with the OF needing those padding partitions...

You might make sure that "Boot" is empty (read format). Or even completly remove the partition. If that doesn't help it might be best to start from scratch.

Either follow the instructions in the dualboot.pdf (Install OSX 1st, MorphOS 2nd), or do as I did ...

Install MorphOS, but format the last partition to HFS.

OSX won't install on HFS, but it offers you to reformat it too HFS+. All attempts to just add a partition with OSX-Tiger have failed for me. You would still need to do the OF-macig to reset MorphOS as the default boot (it ends up on hd:2 in this case).

I found the mistake by chance: After "booting" I've hit the return-button, then I've heard the "Morphos installing sound". By some stupid reason the CD boots into a mode, which is not compatible with my standard 1920 x 1080 TFT monitor. Is there a way of getting a picture without selling the monitor? The pre-installed Morphos was working fine with the very same monitor. My monitor is for sure compatible with any Vesa-mode. What did they use default with Morphos? PAL?

Seems DCC is failing in some bizzare way....

Solution:
- use another monitor (even some old 31kHz CRT-crapper should work) for install and than force it into the right mode for the TFT
- make DCC fail completly (might be achieved by useing an DVI2VGA-adapter)
- use some boot-options when starting the CD from OF (just don't ask me which)

I've used another monitor (was n ot easy to get it out of another installation... Now everything is up and running :D

FullHD screens are known to cause trouble. I have the same issues with my 24" BenQ screen.

An easy workaround is to use a VGA cable and tweak the pixel frequency to get it work with the DVI cable.

Of course this only works if the display has a VGA input.

Geit

The Monitor does have a VGA input, but the Mac Mini no VGA output...

Every Mini has VGA-output as every Mini was delivered with an VGA-adapter (this is really just a passive adapter as the Mini's DVI-port carries both digital and analog signals).

If yours is missing the adapter you can use any other random one you might have around.