<< Solved >> Installation hangs

[Warhammer73]

I'm trying to install HighSierra on my PC.
In the past I run different versions of macOS on that PC, and it worked.

But now I tried a complete fresh installation.

Last information in verbose mode is something related to USBHost (see screenshot), then the screen changed.
Nothing is readable anymore (See other screenshot).


Any help?
Many thanks.

 

[P1LGRIM]

Search for still waiting for root device.

 

[Warhammer73]

The Question is:
Why?

The USB stick should be available...

 

[Warhammer73]

So, USB stick moved to an USB2 switch. Now the screen is moving to Grey, 2nd screen is also activated to green.
But then Nothing happened.

Other tips?

 

[P1LGRIM]

Other tips?

Search for still waiting for root device

The solution has been posted many times.

 

[Warhammer73]

For the root device I found a solution.

But now the root device was found (Screen is switching from black to Grey, no error Messages).
But Nothing happen then.
I didn't found a solution with the search function.

 

[P1LGRIM]

You should boot in verbose mode and post a picture of the screen when it stops.

 

[Warhammer73]

As I said: It's just a Grey screen.

Lot of Outputs in verbose mode.
Then it switches to a Grey (ok, Maybe black) screen and thats it.
No more Output.

 

[Gigamaxx]

As I said: It's just a Grey screen.

Lot of Outputs in verbose mode.
Then it switches to a Grey (ok, Maybe black) screen and thats it.
No more Output.

Do you have another monitor you could connect with? Try 2 monitor connections one using HDMI and the other using Displayport.

How long have you let the grey screen go? The first install can take about 20-30 minutes, I've had the same grey screen on one monitor while the other shows the install window. After the install they both show up normally, and it may take a few install windows to complete.

 

[Warhammer73]

So - problem fixed.

Solution was a bit strange:
After removing of all hard drives and SSD it works as expected.

Some tests later:
When the windows installation is in hibernate mode on another SSD the installation is not working.
When the windows installation was shutting down completely the installation is working.


Thanks!