Hi, you have nixos-install --chroot.
I am not running master - no idea about the grub problem. Regards, Lluís. On Wed, Jul 08, 2015 at 08:20:22AM -0700, rocon...@theorem.ca wrote: > For some unknown reason my NixOS update on my laptop last night failed to > properly install GRUB (even though I claim that GRUB completed > sucessfully). When I rebooted I was met with a simple grub prompt > > grub> > > and no boot menu. > > > Here is what I did to recover. > > (1) I booted from a NixOS install media and logged in as root. > > (2) I mounted my hard disk at /mnt: > mount /dev/sda /mnt > > (3) I browsed the system profiles to select the one I wanted to reactive: > ls -l /mnt/nix/var/nix/profiles/system* > > My lastest generation is system-27-link. For safety I decided I > wanted to active system-26-link. > > (4) Bind dev and friends: Loosely following the nixos-install script, I > ran the following commands: > mount --rbind /dev /mnt/dev > mount --rbind /proc /mnt/proc > mount --rbind /sys /mnt/sys > > (5) I reactivated the system-26-link generation > NIXOS_INSTALL_GRUB=1 chroot /mnt > /nix/var/nix/profiles/system-26-link/bin/switch-to-configuration boot > > After that I rebooted, and I was fine. > > > This is all written from memory, so there may be errors. > > Also, I didn't actually run the command in step (5). I actually ran > chroot /mnt /bin/sh > and from the shell I ran the switch-to-configuration command. > > > Currently, I'm too scared to try to reproduce the GRUB install failure. > > -- > Russell O'Connor <http://r6.ca/> > ``All talk about `theft,''' the general counsel of the American Graphophone > Company wrote, ``is the merest claptrap, for there exists no property in > ideas musical, literary or artistic, except as defined by statute.'' > _______________________________________________ > nix-dev mailing list > nix-dev@lists.science.uu.nl > http://lists.science.uu.nl/mailman/listinfo/nix-dev -- (Escriu-me xifrat si saps PGP / Write ciphered if you know PGP) PGP key D4831A8A - https://emailselfdefense.fsf.org/ _______________________________________________ nix-dev mailing list nix-dev@lists.science.uu.nl http://lists.science.uu.nl/mailman/listinfo/nix-dev