[arch-general] Can't boot, root device not found

[Josh Silard]

Thomas,

Thanks for that I'll try it when I get back to my computer. I think it was
udev that broke because that's what was updating.
On Mar 19, 2012 2:21 PM, "Jayesh Badwaik" <jayesh.badwaik90 at gmail.com>
wrote:

> On Monday 19 Mar 2012 18:03:11 Thomas Bächler wrote:
> > Am 19.03.2012 17:44, schrieb Josh Silard:
> > > Thanks for the help. Does anybody know if there is a way to do this
> > > without
> > > a CD because I have no way to burn one right now.
> >
> > No. Apparently, some part of your initramfs got borked after the
> > upgrade, so you cannot access anything. It depends on what is broken.
> >
> > Check 'lsmod' in your ramfs environment.
> >
> > 1) If your drivers are not loaded, you can try loading them manually
> > (for example: modprobe ahci; modprobe sd_mod for modern SATA
> > controllers) and see if /dev/sd* appear. If that is the case, you can
> > mount /dev/sdXY /new_root manually, log out and your system SHOULD boot.
> >
> > This can be the problem when udev inside the initramfs doesn't work
> anymore.
> >
> > 2) If they are loaded, but your sdXY still don't show up, then the
> > kernel upgrade broke your driver. No way to fix that without a live
> > system, as you cannot access your hard drive.
> >
> > 3) If they are not loaded, and not present in initramfs
> > (/lib/modules/...), then your kernel modules were not included, you are
> > out of luck again.
> >
> > 4) If they are not loaded, and trying to load them with 'modprobe'
> > yields "command not found" or similar, the same, you need a live disc.
> >
> > There could be more problems. If we could communicate live, I could
> > probably tell you what's wrong within a few minutes.
> >
> > Now, you can provide me as much information as possible (sorry, you'll
> > have to type this into your phone manually), such as:
> >
> > 1) The output of 'lsmod' (first column suffices, you could even omit
> > everything that has an entry in the last column).
> > 2) The output of 'ps' (omit everything in [square brackets], so there
> > should only be like two or three entries).
> > 3) An overview of what's in /lib/modules/*/, as well as the name of the
> > folder in /lib/modules/ - also compare that folder name to your uname -r
> > output. By "overview", I mean just the names of the .ko files, in
> > particular, whatever is under kernel/drivers/).
> >
> > If you give me all that, plus a rought overview or picture of what
> > happens on your screen before the error message, I can tell you what's
> > wrong and how to fix it.
>
> He can do it without a CD alright, can't he? He has access to a computer,
> so
> most probably to a USB drive? He can use unetbootin to boot into USB. That
> is
> how I install my archlinux (My laptop DVD drive ditched me two years ago.)
> --
> Jayesh Badwaik
>
>