Impossible to disable VMSVGA10 in Virtual box without an error

[Farooq87]

After I type that command VBoxManage setextradata "My Windows 98" "VBoxInternal/Devices/vga/0/Config/VMSVGA10" "0" Virtual Machine doesn't open anymore with following error

Unknown configuration value '/VMSVGA10' found in the configuration of vga instance #0 (VERR_CFGM_CONFIG_UNKNOWN_VALUE).

[arithesage]

Hi, i followed the steps last night i they worked for me. I'm using VirtualBox 7.0.6 under Kubuntu 23.04 and i have the entry in my .vbox file:

ExtraDataItem name="VBoxInternal/Devices/vga/0/Config/VMSVGA10" value="0"

(I removed "<" and "/>" because then the line seems to be interpreted by the editor)

I got your error when wrote the command line mispelling VMSVGA10 (i wrote VNSVGA10). The problem gone writing the command line without the value.

VBoxManage setextradata "My Windows 98" "VBoxInternal/Devices/vga/0/Config/VMSVGA10"

I suppose that if you don't set a value the entry is removed.

[JHRobotics]

You need to pass empty value if you want reset value:

VBoxManage setextradata "My Windows 98" "VBoxInternal/Devices/vga/0/Config/VMSVGA10" ""

If you want list the already added values, you can do by this command:

VBoxManage getextradata "My Windows 98"

Of course, you can edit VirtualBox configuration file, but if VBox is running, it'll probably immediately overwrite it back.

[JHRobotics]

And one more thing, VMSVGA10 is only for VirtualBox 7.0 in older version it cause this error.