[LUNA] Ubuntu upgrade

[Paul F. Pearson]

For future reference, what Bob said is still relevant. Grub is the de-facto standard boot loader now (there are exceptions, of course) and it also allows you to get to the boot menu and edit the kernel line. This is configured in grub.conf (hiddenmenu and delay are 2 relevant configuration options). I'm less familiar with the other (not LILO nor grub) bootloaders, but I'll bet that they have similar capabilites.  

If you can't get that to work for whatever reason (e.g. the system boots too quickly), you can use a rescue boot disk. I've been partial to SystemRescuCD and Parted Magic, but there are many of them including the Ubuntu install disk itself. Once you boot the rescue disk, you can mount the hard drive, and examine the logs. 


----- Original Message -----
> Well think I am going to punt and say I am screwed.  I have used control
> already delete to get to a promp.  Tried several things with no luck.  Will
> just have to rebuild system.
> 
> Sent from Yahoo Mail on Android
>  
>   On Sun, Jul 31, 2016 at 7:09 PM, Bob Nance<bob.nance at novationsys.com>
>   wrote:   I am not sure how you break into the boot process, but you need
>   to bring the system up in single user mode. The way you used to do that
>   was to interrupt the boot process (by pressing tab before the boot starts)
>   and add the word "single" to the kernel arguments using your boot manager.
> 
> Once you're in single user mode, you should be able to dig through your logs
> and, after bringing up some services, even use apt to remove and upgrade
> packages that might be causing problems.
> 
> Keep us posted.
> 
> ---
>  Bob Nance
>  Novation Systems
>  256-534-4620
>  
> (iPhone-flavored)
> 
> 
> > On Jul 31, 2016, at 6:27 PM, Michael Hall <hallmw at att.net> wrote:
> > 
> > I did control although f1 and got to a prompt.  I did an apt-get update.
> >   Still hangs.  Did control alt delete.  I see a message now on the screen
> > that says A start job is running for hold until boot process finishes up.
> >   No idea what that means.
> > 
> > Sent from Yahoo Mail on Android
> > 
> >  On Sun, Jul 31, 2016 at 5:51 PM, Michael Hall<hallmw at att.net> wrote:
> >      Well I upgraded my laptop to 16.04.  However, it said it upgraded with
> >  errors.  Now my system will just boot to the screen that says Ubuntu with
> >  the dots underneath. It just stays at that screen. I waited over an hour
> >  and no luck.  If I hit the power button the screen goes away and I see
> >  that it is stopping services.  Is there a way that I can boot into my
> >  system.  I thought if I could get it to boot to a prompt I might could do
> >  apt-get upgrade and that might fix things.
> > Thanks for any help.
> > Michael
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