1

I tried:
Editing file com.apple.Boot.plist by adding:

<key>Graphics Mode</key>
<string>1280x1024x32</string>

Modifying VM settings by executing this line in terminal:

VBoxManage setextradata "ElCapitan" CustomVideoMode1 1280x1024x32 

Another terminal method:

VBoxManage setextradata "ElCapitan" VBoxInternal2/EfiGopMode 3

None of the above methods worked for me. Every time I start El Capitan VM, it runs in 1024x768 resolution. I remember that about year ago, when I used Windows as host, it worked. Now I use Ubuntu. Can that be a reason it's not working anymore?

1 Answer 1

2

I tried all the above steps on El Capitan (host: Manjaro).

What worked for me was:

VBoxManage setextradata "mac" "VBoxInternal2/EfiGraphicsResolution" "1920x1080"

Ref: https://superuser.com/a/1264540

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