[PLUG] boot failure

Genaro Hernandez genaro at pdx.edu
Wed Nov 4 21:20:09 UTC 2015


I want to add something here in case it helps.

I had emailed PLUG when I had an issue with my computer as well. It's an
old MacBook. I ended up going with this solution after doing some research
and experimentation:

   1. I created a bootable thumb drive with an Ubuntu on it.
   2. I accessed the grub menu by pressing the 'alt/option' key during
   startup.
   3. I selected 'Ubuntu Advanced options'.
   4. I pressed 'e' to make edits. But instead of making edits, I pressed
   'F2' to get the grub terminal.
   5. On the terminal I entered these 3 lines: (1) set root=(hd1), (2)
   chainloader +1, and (3) boot.

By following these steps I was able to reinstall Ubuntu from the thumbdrive.

Note: I did not salvage any files with this process. I just wanted to
completely wipe all files and reinstall Ubuntu.


On Wed, Nov 4, 2015 at 12:00 PM, Denis Heidtmann <denis.heidtmann at gmail.com>
wrote:

> So what to do?
>
> I found references on the web in responses to the 'grub rescue>' prompt
> that said  'set' and 'ls' were useful, so:
> ls:
> (hd0) (hd0,msdos5) (hd0,msdos1) (fd0)
> set:
> cmdpath=(hd0)
> prefix=(hd0,msdos1)/boot/grub
> root=hd0,msdos1
>
> Does this help at all?
>
> -Denis
>
> On Wed, Nov 4, 2015 at 9:19 AM, benjamin barber <starworks5 at gmail.com>
> wrote:
>
> > it sounds more like intrusion than hardware failure.
> >
> > On Wed, Nov 4, 2015 at 9:11 AM, Denis Heidtmann <
> denis.heidtmann at gmail.com
> > >
> > wrote:
> >
> > > The precursor may or may not be related.
> > >
> > > I discovered that my wife's gmail had been accessed by an iphone on
> Nov,
> > > 1.  We have no iphone, and were home alone at the time listed.  So I
> > > changed the pass word.  Then tried to open firefox.  Would not load.
> > > Nothing would work, except the mouse pointer would move around.  Had to
> > use
> > > the power button to restart.  Now I get error: attempt to read or write
> > > outside of disk 'hd0'.  Entering rescue mode.  grub rescue>
> > >
> > > Yesterday the computer froze in a similar fashion when my wife was
> > looking
> > > at email in evolution.  A power switch intervention was required, but
> it
> > > booted fine at that time.
> > >
> > > So the two incidents point to hardware problems or intrusion?
> > >
> > > I have googled for grub rescue recovery, but what I found was aimed at
> > > people with more understanding than I have.
> > >
> > > Are there suggestions that someone here can offer?
> > >
> > > thanks,
> > > -Denis
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