@Izzy Strange, it's a coincidence I also tried VirtualBox and Android-x86, but apart from MacType giving me compatibility problems (disabled it), it works just fine without modifying anything in grub. I'm using Windows though...
"Install" as in install on a drive opposed to running it in VB?
I'm having problems with my own installation at this moment too, namely distorted screens. It's not sth I 100% need though so I'll try figuring it out but will back off if I hit walls
As it's about installing Android, it should be on-topic on our site, right? Or would one argue it's rather a Linux question? But on Unix&Linux they might argue it's about Android…