I think it's impossible because Moutain Lion is a 64 bits OS whereas MSI Wind U100 is a 32 bits computer.
As far as I know, the latest Mac OS you can put on your MSI WIND U100 is Snow Leopard 10.6.8.
You can find an install guide here. Perhaps it is also possible to do it with Unibeast...
I found something very strange : if I connect this ASROCK VISION 3D to a TV monitor, then macOS Sierra boots perfectly every time (but I've got another problem on the TV screen : overscan).
So, the booting problem could be related to my monitor (DELL U2414H) or to the GPU (NVIDIA GT425M) ...
I've got a Lenovo X61T (tablet) and I'll also like ton install Sierra on it.
Did you update your X61 with unofficial Middleton's BIOS available here ? :
I own an ASROCK VISION 3D computer on which I installed, a long time ago, Mavericks. I even wrote a tutorial about this installation here.
Now, I installed Sierra on this computer using Unibeast / Multibeast / Clover and the computer has got an erratic booting behaviour : most of the time...
I've tried to install MacOS Sierra on ASROCK VISION 3D 137 B/D using Unibeast / Multibeast and it booted well two or three times, then I changed monitor and now it always reboot to BIOS before the end of the booting process.
Could you help me to find what is the problem ?
FYI, my original iMac (late 2008) has also sleep problems since OS X 10.11.5 (and wake-on-lan problems since 10.11.4), and I cannot manage to fix them.
However, you can know why your Mac wakes up using this terminal command :
syslog | grep -i "Wake reason"
You'll find explanation about...
You're right : to update the windows driver, you have to go to this page :
Then you have to chose "GeForce 400 series" (and not "GeForce 400M series") and then "GeForce GT420"".
But, I don't think the problem with Mac OS X is related...
I tried this method on my ASROCK vision 3D, but it did not work : I had to reinstall hdaenabler1.kext.
Am I missing something ?
Here is the detailed installation method I used to install Mavricks on this computer ...