How to recover boot ubuntu 14.04 on macbook-pro?

Question

I am using ubuntu 14.04 on a macbook pro. I was trying to make a usb stick for a customize boot from terminal when i stop the process. I lost the boot. I cant boot anymore. I enter in the grub menu, but if I choose normal boot, it stuck. If I choose the repair, it stops on the repair menu and write " disabling irq #17" . I have tried to reinstall system following How to restore a system after accidentally removing all kernels?.

But it is not booting yet. Any suggestions? I can boot using the usb stick and I can see my hd (/dev/sda4).

Answer 1

If you have a live CD then use it to install again.

But If you dont have one follow this

1. Find out which devices are available:

   ls

2. Set to the correct value, which might be something like this:

set prefix=(hd0,1)/grub

(this has to be done according to your own drive name)

set root=(hd0,1)

(this has to be performed according to your own drive name.)

insmod normal 
normal

The above commands will get you out of the rescue mode to the normal terminal mode. In the terminal mode you have more commands with increased functionality. After the above commands you can go ahead and start the rest of the settings.

insmod linux
* linux /vmlinuz root=/dev/sdXY ro

(if this doesn't work try this)

linux /boot/vmlinuz-3.2.0-14-generic root=/dev/sda1 ro

(optional)

initrd /initrd.img

(Selects the initrd image.)

boot

After Booting the system. Update the GRUB config file.

sudo update-grub

Reinstallation of Grub on the device:

sudo grub-install /dev/sdX

Hope I helped, Original here