MP 1,1-5,1 Weird problem on MacPro 5,1 with Win11 via OCLP

[StormLord]

Hi, I'm confused with a new problem.

I have a MP5,1 with Monterey on NVME, with Vega64, upgraded Wifi/BT card BCM94360CD via OCLP and a legacy win10 bootcamp that's working perfectly fine.

I thought to try win11, so I prepped a new stick with Rufus and tiny11.
Now the problem is when I choose from the OCLP picker to boot to Monterey, it loads up to the point to show an empty background pic, and finder does not load neither the menu bar. Machine is responsive to cmd-option-esc but there is nothing on the list to kill.
Win11 are working perfectly fine with all drivers OK, sound, BT etc.
If I take out the win11 ssd, then Monterey loads up normally.
I have already reseted OCLP nvram but the problem persist.

Any thoughts of why that happens?

 

[Macschrauber]

do you have NTFS writing tools installed? Does it happen with a supported OS, too?

 

[StormLord]

do you have NTFS writing tools installed? Does it happen with a supported OS, too?

Yes, I have Tuxera NTFS on Monterey, and no I didn't check if thats happen on Mojave. I will try to find the ssd I storaged somewhere with my older mojave installation and try again and report here.
Thanks

 

[StormLord]

I solved it.
I feel like a noob, I should have though of that. Thanks Macschrauber for the tip!
When I managed to boot into Monterey I've found out that the win11 disk volume was into read-only state no matter that Tuxera was managing it, so I remembered that windows does not do a proper shut down by default and just hibernate
I just disabled hibernation completely on the win side and problem solved