Ubuntu
grub2 package

Grub broke

Asked by natakene

Grub broke, tried to fix but it did not finally show Windows Vista (loader), so tried to fix and now in stead of grub menu I have a grub itself exactly like when u write grub in Terminal
grub>
I have nothing in grub menu.lst
pls help

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natakene
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zvacet (ivicakolic) said : 		#1

Try to reinstall grub following

1. http://ubuntuforums.org/showthread.php?t=224351 if you have version prior to Karmic

2.https://help.ubuntu.com/community/Grub2 if you use Karmic

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natakene (natakene) said : 		#2

So now I have the ERROR 15 again

ubuntu@ubuntu:~$ sudo upgrade-from-grub-legacy

core.img doestn't exist, trying to create it.

grub-probe: error: cannot find a device for /boot/grub.

No path or device is specified.
Try ``grub-probe --help'' for more information.
Auto-detection of a filesystem module failed.
Please specify the module with the option `--modules' explicitly.

ubuntu@ubuntu:~$ sudo apt-get install grub-pc
Reading package lists... Done
Building dependency tree
Reading state information... Done
grub-pc is already the newest version.
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.

When I uninstalled and installed again i never had a blue background <ok> or things like that

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natakene (natakene) said : 		#3

And now I have again this thing like in Terminal like im in grub itself
sh grub>

why its so complicated or do I something wrong?

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natakene (natakene) said : 		#4

i cannot install it gives this:
ubuntu@ubuntu:~$ sudo grub-install /dev/sda
Probing devices to guess BIOS drives. This may take a long time.
Could not find device for /boot: Not found or not a block device.

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natakene (natakene) said : 		#5

I tried to do this in grub command:
setup --prefix=/boot/grub (hd0)
root (hd0,4)
kernel (hd0,4)/boot/vm<use tab to get kernel image> root=/dev/hda5 ro
initrd (hd0,4)/boot/initrd<use tab again to get the right initrd image>
boot

and had this:
grub> setup --prefix=/boot/grub (hd0)

Error 12: Invalid device requested

grub> root (hd0,4)

Error 21: Selected disk does not exist

grub> kernel (hd0,4)/boot/vm<use tab to get kernel image> root=/dev/hda5 ro

Error 21: Selected disk does not exist

grub> initrd (hd0,4)/boot/initrd<use tab again to get the right initrd image>

Error 19: Linux kernel must be loaded before initrd

grub> boot
Starting up ...

Error 8: Kernel must be loaded before booting

I have no hope anymore

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natakene (natakene) said : 		#6

rated for you? (y/N) y
Searching for splash image ... none found, skipping ...
Found kernel: /boot/memtest86+.bin
Found kernel: /boot/memtest86+.bin
Updating /boot/grub/menu.lst ... done

thats all i have in menu.lst ?
he dont even see my ubuntu installed

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natakene (natakene) said : 		#7

ubuntu@ubuntu:~$ sudo grub-install /dev/sda
Probing devices to guess BIOS drives. This may take a long time.
Could not find device for /boot: Not found or not a block device.

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natakene (natakene) said : 		#8

What is wrong in here? I am not a speshalist pleeeese help me
ubuntu@ubuntu:~$ sudo apt-get install grub-pc
Reading package lists... Done
Building dependency tree
Reading state information... Done
Suggested packages:
  desktop-base
The following NEW packages will be installed:
  grub-pc
0 upgraded, 1 newly installed, 0 to remove and 0 not upgraded.
Need to get 434kB of archives.
After this operation, 1,753kB of additional disk space will be used.
Get:1 http://archive.ubuntu.com karmic/main grub-pc 1.97~beta4-1ubuntu3 [434kB]
Fetched 434kB in 0s (879kB/s)
Preconfiguring packages ...
Selecting previously deselected package grub-pc.
(Reading database ... 120136 files and directories currently installed.)
Unpacking grub-pc (from .../grub-pc_1.97~beta4-1ubuntu3_i386.deb) ...
Processing triggers for man-db ...
Setting up grub-pc (1.97~beta4-1ubuntu3) ...
grub-probe: error: cannot find a device for /boot/grub.

No path or device is specified.
Try ``grub-probe --help'' for more information.
Auto-detection of a filesystem module failed.
Please specify the module with the option `--modules' explicitly.

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natakene (natakene) said : 		#9

ubuntu@ubuntu:~$ sudo upgrade-from-grub-legacy

core.img doestn't exist, trying to create it.

grub-probe: error: cannot find a device for /boot/grub.

No path or device is specified.
Try ``grub-probe --help'' for more information.
Auto-detection of a filesystem module failed.
Please specify the module with the option `--modules' explicitly.
ubuntu@ubuntu:~$

Revision history for this message
natakene (natakene) said : 		#10

Solved by my self
reading and trying to reinstall grub helped me to think about how i came to the error 15
that was the second time by the way
so When reinstalling ubuntu, that crashed after the fact that computer had to switch of cause of a lack of energy, i was choosing in advanced option a sda5 as the place for grub that caused grub to not to know anything!
So I just reinstalled Ubuntu without touching that advanced option as it was already sda by default!
All of this gave my small head a lot of headache as I am not a specialist!