High Sierra Screen Size

[d.18@free.fr]

Hi,

I tried to change screen resolution on my High sierra virtual machine by doing this :

in terminal : VBoxManage list vms
Returns me : "OSX" {...}

And when I enter : sudo VBoxManage setextradata "OSX" VBoxInternal2/EfiGopMode 4

I get an error :

VBoxManage: error: Could not find a registered machine named 'OSX'
VBoxManage: error: Details: code VBOX_E_OBJECT_NOT_FOUND (0x80bb0001), component VirtualBoxWrap, interface IVirtualBox, callee nsISupports
VBoxManage: error: Context: "FindMachine(Bstr(a->argv[0]).raw(), machine.asOutParam())" at line 934 of file VBoxManageMisc.cpp


What's wrong ?

Thx


OS : fedora 32
VirtualBox 6.1

[scottgus1]

High sierra virtual machine (in Linux Hosts)

This setup is illegal unless the physical computer is a Mac. OSX guests on non-Apple hardware Virtualbox can't support illegal setups.

If your computer really is a Mac with Linux installed, start the guest from full normal shutdown, not save-state. Run until you see the problem happen, then shut down the guest from within the guest OS if possible. If not possible, close the Virtualbox window for the guest with the Power Off option set.

Right-click the guest in the main Virtualbox window's guest list, choose Show Log. Save the far left tab's log, zip it, and post the zip file, using the forum's Upload Attachment tab.

If the computer is a regular PC, then best let this one fade away...

[d.18@free.fr]

I run fedora on my macbook air. No problem with that.

My virtual osx partition on fedora works perfectly.
I just don't succeed in changing screen resolution


Thank you

[scottgus1]

Can't help until we get the log I mentioned.

[d.18@free.fr]

Here it is

[mpack]

You can turn off 3D acceleration.

(1) There is no 3D acceleration with the VBoxVGA controller.
(2) There is no graphics acceleration for OS X guests, period.

Also, you are not using VirtualBox, you are using an unsupported third party build.

[multiOS]

The VBoxManage command syntax also seems to be incorrect. See User Manual (6.1.x) Section 3 14 1 (Page 63)

[d.18@free.fr]

The problem is that error message :
VBoxManage: error: Could not find a registered machine named 'OSX'

VBoxManage doesn't find the virtual machine.

Do I need to open the terminal in a specific folder go get it work ?

Thank you