Ubuntu won't start after failed update

Use a chroot from LiveCD. OmgUbuntu has a guide called "sticking it to Grub" you can then run:

sudo fuser -vki /var/lib/dpkg/lock
sudo dpkg --configure -a
sudo apt-get -f install
sudo update-grub

Then exit the chroot and reboot to your installed OS. If power is an issue then a cheap UPS will help when the power cuts out.

I'm sorry, I can't do it.

I have a CD with the latest Ubuntu, but can't get the initial installation
screen to display...
Can you help me? I really don't know what to do.
I have widows vista in a different partition.
On May 25, 2015 6:17 AM, "actionparsnip" <
<email address hidden>> wrote:

> Your question #267332 on Ubuntu changed:
> https://answers.launchpad.net/ubuntu/+question/267332
>
> Status: Open => Answered
>
> actionparsnip proposed the following answer:
> Use a chroot from LiveCD. OmgUbuntu has a guide called "sticking it to
> Grub" you can then run:
>
> sudo fuser -vki /var/lib/dpkg/lock
> sudo dpkg --configure -a
> sudo apt-get -f install
> sudo update-grub
>
> Then exit the chroot and reboot to your installed OS. If power is an
> issue then a cheap UPS will help when the power cuts out.
>
> --
> If this answers your question, please go to the following page to let us
> know that it is solved:
> https://answers.launchpad.net/ubuntu/+question/267332/+confirm?answer_id=0
>
> If you still need help, you can reply to this email or go to the
> following page to enter your feedback:
> https://answers.launchpad.net/ubuntu/+question/267332
>
> You received this question notification because you asked the question.
>

If you try rebooting in recovery mode, what do you see?
Do you get the grub menu?

Hi, when I restart in recovery mode I get to the recovery menu with the
update grub option.
On May 25, 2015 2:51 PM, "Manfred Hampl" <
<email address hidden>> wrote:

> Your question #267332 on Ubuntu changed:
> https://answers.launchpad.net/ubuntu/+question/267332
>
> Status: Open => Needs information
>
> Manfred Hampl requested more information:
> If you try rebooting in recovery mode, what do you see?
> Do you get the grub menu?
>
> --
> To answer this request for more information, you can either reply to
> this email or enter your reply at the following page:
> https://answers.launchpad.net/ubuntu/+question/267332
>
> You received this question notification because you asked the question.
>

Can you reboot into recovery mode and select "root command prompt"?

If you execute the command

lsb_release -crid

what Ubuntu release number is shown?

And if you try a normal boot, what happens? How far does the boot process go, what do you see on screen?

I get: Ubuntu 14.04.2 LTS
On May 25, 2015 3:11 PM, "Manfred Hampl" <
<email address hidden>> wrote:

> Your question #267332 on Ubuntu changed:
> https://answers.launchpad.net/ubuntu/+question/267332
>
> Status: Open => Needs information
>
> Manfred Hampl requested more information:
> Can you reboot into recovery mode and select "root command prompt"?
>
> If you execute the command
>
> lsb_release -crid
>
> what Ubuntu release number is shown?
>
>
> And if you try a normal boot, what happens? How far does the boot process
> go, what do you see on screen?
>
> --
> To answer this request for more information, you can either reply to
> this email or enter your reply at the following page:
> https://answers.launchpad.net/ubuntu/+question/267332
>
> You received this question notification because you asked the question.
>

When I do the normal status I just see the Ubuntu loading symbol with the
give circles lighting up as it loads, and when it gets to where normally I
would get the first Ubuntu screen, everything goes black. Just a black
frozen screen that won't even restart.
On May 25, 2015 3:11 PM, "Manfred Hampl" <
<email address hidden>> wrote:

> Your question #267332 on Ubuntu changed:
> https://answers.launchpad.net/ubuntu/+question/267332
>
> Status: Open => Needs information
>
> Manfred Hampl requested more information:
> Can you reboot into recovery mode and select "root command prompt"?
>
> If you execute the command
>
> lsb_release -crid
>
> what Ubuntu release number is shown?
>
>
> And if you try a normal boot, what happens? How far does the boot process
> go, what do you see on screen?
>
> --
> To answer this request for more information, you can either reply to
> this email or enter your reply at the following page:
> https://answers.launchpad.net/ubuntu/+question/267332
>
> You received this question notification because you asked the question.
>

When you boot normally (until you have the black screen), try pressing ctrl-alt-F1
Do you get a virtual console screen with a "login:" prompt or does everything stay black as before?

Yes, I have the login prompt!
On May 25, 2015 3:31 PM, "Manfred Hampl" <
<email address hidden>> wrote:

> Your question #267332 on Ubuntu changed:
> https://answers.launchpad.net/ubuntu/+question/267332
>
> Status: Open => Needs information
>
> Manfred Hampl requested more information:
> When you boot normally (until you have the black screen), try pressing
> ctrl-alt-F1
> Do you get a virtual console screen with a "login:" prompt or does
> everything stay black as before?
>
> --
> To answer this request for more information, you can either reply to
> this email or enter your reply at the following page:
> https://answers.launchpad.net/ubuntu/+question/267332
>
> You received this question notification because you asked the question.
>

Says: error on device sr0, logical block 2
On May 25, 2015 3:31 PM, "Manfred Hampl" <
<email address hidden>> wrote:

> Your question #267332 on Ubuntu changed:
> https://answers.launchpad.net/ubuntu/+question/267332
>
> Status: Open => Needs information
>
> Manfred Hampl requested more information:
> When you boot normally (until you have the black screen), try pressing
> ctrl-alt-F1
> Do you get a virtual console screen with a "login:" prompt or does
> everything stay black as before?
>
> --
> To answer this request for more information, you can either reply to
> this email or enter your reply at the following page:
> https://answers.launchpad.net/ubuntu/+question/267332
>
> You received this question notification because you asked the question.
>

device sr0 usually is the CD/DVD device, so this does not make sense when you boot from the hard disk.

If you switch to the virtual console (ctrl-alt-F1) and you get the "login:" prompt - please enter your username (which was defined at installation time), press enter, and when you get a prompt for the password, enter the password (you will not see anything when typing the password).

Can you log in this way?

I'm trying, but is saying my login is incorrect....
 On May 25, 2015 4:26 PM, "Manfred Hampl" <
<email address hidden>> wrote:

> Your question #267332 on Ubuntu changed:
> https://answers.launchpad.net/ubuntu/+question/267332
>
> Status: Open => Needs information
>
> Manfred Hampl requested more information:
> device sr0 usually is the CD/DVD device, so this does not make sense
> when you boot from the hard disk.
>
> If you switch to the virtual console (ctrl-alt-F1) and you get the
> "login:" prompt - please enter your username (which was defined at
> installation time), press enter, and when you get a prompt for the
> password, enter the password (you will not see anything when typing the
> password).
>
> Can you log in this way?
>
> --
> To answer this request for more information, you can either reply to
> this email or enter your reply at the following page:
> https://answers.launchpad.net/ubuntu/+question/267332
>
> You received this question notification because you asked the question.
>

Are you sure about your user name? It is most probably only lowercase characters.

Tried lowercase and everything I could think of.... Haven't stop trying
until now. No joy...
On May 25, 2015 4:56 PM, "Manfred Hampl" <
<email address hidden>> wrote:

> Your question #267332 on Ubuntu changed:
> https://answers.launchpad.net/ubuntu/+question/267332
>
> Status: Open => Needs information
>
> Manfred Hampl requested more information:
> Are you sure about your user name? It is most probably only lowercase
> characters.
>
> --
> To answer this request for more information, you can either reply to
> this email or enter your reply at the following page:
> https://answers.launchpad.net/ubuntu/+question/267332
>
> You received this question notification because you asked the question.
>

Found it!!
Its accepted me, but still hasn't loaded.
Hire can I get out to startup?
On May 25, 2015 5:01 PM, "bobacajana" <email address hidden>
wrote:

> Your question #267332 on Ubuntu changed:
> https://answers.launchpad.net/ubuntu/+question/267332
>
> Status: Needs information => Open
>
> You gave more information on the question:
> Tried lowercase and everything I could think of.... Haven't stop trying
> until now. No joy...
> On May 25, 2015 4:56 PM, "Manfred Hampl" <
> <email address hidden>> wrote:
>
> > Your question #267332 on Ubuntu changed:
> > https://answers.launchpad.net/ubuntu/+question/267332
> >
> > Status: Open => Needs information
> >
> > Manfred Hampl requested more information:
> > Are you sure about your user name? It is most probably only lowercase
> > characters.
> >
> > --
> > To answer this request for more information, you can either reply to
> > this email or enter your reply at the following page:
> > https://answers.launchpad.net/ubuntu/+question/267332
> >
> > You received this question notification because you asked the question.
> >
>
> --
> You received this question notification because you asked the question.
>

Ok, problem solved. Tried to load grub, but when it failed the console have
me the commands, so everything is installing, now.

Thank you so much, Manfred!!
On May 25, 2015 5:11 PM, "bobacajana" <email address hidden>
wrote:

> Your question #267332 on Ubuntu changed:
> https://answers.launchpad.net/ubuntu/+question/267332
>
> Status: Answered => Open
>
> You are still having a problem:
> Found it!!
> Its accepted me, but still hasn't loaded.
> Hire can I get out to startup?
> On May 25, 2015 5:01 PM, "bobacajana" <
> <email address hidden>>
> wrote:
>
> > Your question #267332 on Ubuntu changed:
> > https://answers.launchpad.net/ubuntu/+question/267332
> >
> > Status: Needs information => Open
> >
> > You gave more information on the question:
> > Tried lowercase and everything I could think of.... Haven't stop trying
> > until now. No joy...
> > On May 25, 2015 4:56 PM, "Manfred Hampl" <
> > <email address hidden>> wrote:
> >
> > > Your question #267332 on Ubuntu changed:
> > > https://answers.launchpad.net/ubuntu/+question/267332
> > >
> > > Status: Open => Needs information
> > >
> > > Manfred Hampl requested more information:
> > > Are you sure about your user name? It is most probably only lowercase
> > > characters.
> > >
> > > --
> > > To answer this request for more information, you can either reply to
> > > this email or enter your reply at the following page:
> > > https://answers.launchpad.net/ubuntu/+question/267332
> > >
> > > You received this question notification because you asked the question.
> > >
> >
> > --
> > You received this question notification because you asked the question.
> >
>
> --
> You received this question notification because you asked the question.
>

Thanks Manfred Hampl, that solved my question.