[Nix-dev] installation fails to install grub to separate /boot

[Michael Raskin]

Adam Vogt wrote:
> Hey, I've tried a couple of times to install nixos; it looks good, but the 
> documentation is pretty lacking and out of date, so I'm having trouble.
> 
> I need to use a separate /boot, due to my bios. So I set up a configuration 
> file like the one attached. With any combination of bootMount = "(hd0,1)" 
> or "/boot" or "/dev/sda2", fails to keep /mnt/boot mounted when the 
> nixos-install script gets around to finalizing the installation (it calls a 
> 'nexos-rebuild boot', which then calls grub-install.
> 
> Anyways, the variables in the scripts are mildly opaque, so I can't tell 
> exactly why the grub-install fails saying either /boot is not a block 
> device, or it installs the stuff to the root partition (which won't boot).  
> Hopefully you can help?
> 
> I've looked at the example configs in svn and on the cd, and I cannot see 
> one using a separate boot partition that looked much (if at all) different.

The trick with installation is that you need to mount all of your 
important partitions before nixos-install. So you need to mount desired 
/ to /mnt, and then mount all partitions where installation might want 
to write. So, in your case, did you mount /dev/sda2 to /mnt/boot?