Try running cfdisk outside of the void-installer. This should allow you to set the first partition to be bootable. If you're partitioning from inside the installer I don't think it allows you to do that, so partition before running the installer, then set the filesystem mount points.

This video is in french but should give you an idea of what I'm talking about, cheers. Until I did this I was having the same error.

https://www.youtube.com/watch?v=00u7vV_4Mfg

On Sunday, September 13, 2015 at 2:45:36 PM UTC-4, Matt wrote:
Hey. I'm having trouble with cfdisk and GPT.
I've tried a bunch of things, but I'm completely lost and I can't find any answers elsewhere.

Firstly this is what my cfdisk looks like. http://i.imgur.com/WtAXxgv.png (this is an example, I have the /boot/efi partition and the / partition here when I actually try. That or whatever partition or type I add/change to experiment)
I haven't seen a tutorial or example with their menu like this.

On the screen before entering the tool I've read this http://i.imgur.com/9KdfoN9.png but how do I toggle that partition as bootable?
Nothing happens when I press b and I don't even have a boot column like in other examples.

When I do try it I get an error installing GRUB. http://i.imgur.com/M9XExWy.png
And when I use alt+F8 to check the error I see something like this. http://i.imgur.com/c20v9rv.png
Where I tend to focus in on "there is no BIOS boot partition"

I've tried setting the boot partition as "BIOS Boot" type and it "works" in that the installation completes, but then when I try booting the VM I get "GRUB _" frozen on the screen. Nothing happens.
May I please get some guidance here? I really want to test out and get used to Void before installing it on my Thinkpad later. I'm quite an amateur so sorry if I'm missing something obvious.

On Tuesday, April 21, 2015 at 1:22:12 AM UTC-4, Juan RP wrote:
Hi,

this wiki page is obsolete. cfdisk from util-linux-2.25 supports GPT just fine, so that there's no need
to depend on parted anymore.

Cheers