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I'm trying to install Arch on sda8 (with swap on sda7) following the instructions here. I got to the part of setting up the WiFi a second time, but since I already have GRUB, I got lost at the section about installing a bootloader. I rebooted, and GRUB opened as usual: with Ubuntu and Windows options, but no Arch. I went to Ubuntu and tried various things to get GRUB to recognise Arch (usually involving grub-install). However, these made things worse, and now when I reboot and select Ubuntu, I get the message:

error: file `/boot/vmlinuz-3.13.0-24-generic' not found
error: you need to load the kernel first.

There are a few things I can still run:

  • An Arch live CD
  • A GParted live CD
  • A LuPu live CD
  • A Wubi version of Ubuntu 13.04 (Ubuntu running from the Windows partition sda2)
  • Probably, by extension, Windows (I haven't tried yet)

I'd rather not install another large live CD, since they take a very long time to download. So, how can I recover use of the actual Ubuntu 14.04 and get access to Arch?

Edit: I can now use Arch and Ubuntu.

mudri
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    Have you run grub-mkconfig -o /boot/grub/grub.cfg after installing grub in order to generate the new config file? – cioby23 May 18 '14 at 19:51
  • I remember doing grub-mkconfig but I'll try again. Which OS should I run it on (Arch live CD/Wubi/...)? – mudri May 18 '14 at 20:29
  • I ran it on Wubi, and it said promising things like “Found Ubuntu 14.04” and “Found Arch”, but after reboot things are just the same. Same options, can't access Ubuntu 14.04 &c. – mudri May 18 '14 at 20:33
  • Did you mount all partitions? And (dumb question, but…) did you redirect the grub-mkconfig's output to the right file? – Andreas Wiese May 18 '14 at 23:32
  • No. I'll try mounting all of the partitions when I get back to that computer. The command I ran was grub-mkconfig -o /boot/grub/grub.cfg, which I'm hoping is the correct file, but I can't know at the moment. How do I tell whether it's right? – mudri May 19 '14 at 07:24
  • Okay, before I get back home, what's the best order to do things in? 1) mount all of the partitions. 2) grub-mkconfig. 3) grub-install (is that necessary?)? Also, do I need to mount swap partitions? – mudri May 19 '14 at 14:04
  • Okay, I've got some weird system now by which, to boot Arch, I select Windows 7 from GRUB, which takes me to the Windows bootloader. From that, I pick Ubuntu (Wubi), which actually takes me to another GRUB menu. From that, I can pick Wubi, Ubuntu 14.04 or Arch. So I can get to Arch and real Ubuntu, but I must be putting the output into the wrong file. I still have no idea which partition that file is on, and changing the boot partition doesn't make a difference. Is there anything more I can show you? – mudri May 19 '14 at 20:23

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