Linux Mint and OSX86 boot

[MIRKOSOFT]

Hi!

I'm not sure where post this topic 'cause it is about Linux and OSX together.
What I did?
Installed OSX86 10.4 Tiger with partition table creation in model of 2 partitions: MacOS Extended Journaled and 2nd as free space.
Installation and reboot successful.  OSX86 was working correctly.
Then I installed Linux Mint based Commodore OS Vision 1.3 x86 with partitioning using Ext4 FS and three partitions mounted as /, /home and swap.
Installation and reboot successful - even in boot menu is entry OSX.
After login into Linux I reboot and select OSX.
Problem - computer looks like booting system but after few seconds restarts.

How to enter OSX or how to change booting options or what to do now?

Thank you all for help and patience.
Miro

[Geek-9pm]

MIRKOSOFT,
Did you already Google this topic?
You can find dozens, maybe hundreds of posts about how somebody somewhere dis something like that.
Here is a video:
https://www.youtube.com/watch?v=kzSgHas1dJ0
Me does Windows, Linux and Mac on a laptop.

But I have never tried it.  I don't have a license to use an Apple OS on a x86 machine. So I can not help yu myself. Sorry.

But you can also try the Ubuntu chat forum.
Look at this: https://ubuntuforums.org/forumdisplay.php?f=434
That's the bast I can do. 

[TheWaffle]

Is this running on an old apple computer, or a pc?

As as a sidenote the EULA for macOS Tiger did not include the "Other Use Restrictions" clause. https://www.apple.com/legal/sla/docs/macosx104.pdf

[MIRKOSOFT]

I know Apple restriction that it can run only on Apple labeled computer.
Of course, but from mentioned EULA it is not totally clear.

So, I know that's not running on Apple computer, it's running on old laptop. Please don't crucify me for that, I'm using it only for retrocomputing hobby.
Really I won't to make business - reason is that I want to learn coding on OSX still containing Universal Binary...

I have lent also Apple Macintosh SE with MC68000 and I'm working on it by assembly programming it.
If you see in post - also Commodore OS Vision is Linux distro selected for my hobby - Commodore 8/16-bit computers.
Even, I'm creating software for DOS and Windows 3.x.

In case modern computing is situation other, but it is out of topic.

But back to Q: What changed Linux in booting of OSX that if I select OSX in boot menu it only after few seconds reboots?
I know many tutorials - but I need to have all clear.
Problem is that OSX I'm using first time.

Miro

[TheWaffle]

Can you upload your /boot/grub/grub.cfg file?

[MIRKOSOFT]

In attachment - added extension TXT.

Miro

[MIRKOSOFT]

Helped that Grub config file?

Miro

[TheWaffle]

As far as I can tell, there is nothing out of the ordinary in it.