Fwd: Re: grub rescue

Javier Gardeazabal javier.gardeazabal at ehu.es
Fri May 7 19:01:35 UTC 2010


On Friday, 7 de May de 2010 19:47:44 Goh Lip wrote:
> On 05/08/2010 01:32 AM, JAVIER GARDEAZABAL wrote:
> > On 05/08/2010 12:29 AM, Goh Lip wrote:
> >> On Fri, 7 May 2010 17:25:21 +0200
> >>
> >> Javier Gardeazabal<javier.gardeazabal at ehu.es>   wrote:
> >>> I booted from a livecd and typed
> >>>
> >>> sudo fdisk -l
> >>> sudo mount /dev/sda1 /mnt
> >
> > Javier, do you have other OS other than kubuntu, like windows?
> > Do you know how many partitions you had?
> > And, do you remember the output of "sudo fdisk -l" above?
> >
> > Regards - Goh Lip
> >
> > Dear Goh
> >
> > Thanks a lot for your help.
> > I did not try your last suggestions yet.
> > I do not have windows in my box.
> > This is what fdisk delivers
> >
> > ubuntu at ubuntu:~$ sudo fdisk -l
> >
> > Disk /dev/sda: 146.8 GB, 146815733760 bytes
> > 255 heads, 63 sectors/track, 17849 cylinders
> > Units = cylinders of 16065 * 512 = 8225280 bytes
> > Sector size (logical/physical): 512 bytes / 512 bytes
> > I/O size (minimum/optimal): 512 bytes / 512 bytes
> > Disk identifier: 0x0ecab17e
> >
> >      Device Boot      Start         End      Blocks   Id  System
> > /dev/sda1   *           1       17119   137508336   83  Linux
> > /dev/sda2           17120       17849     5863725    5  Extended
> > /dev/sda5           17120       17849     5863693+  82  Linux swap /
> > Solaris
> >
> > Disk /dev/sdb: 300.0 GB, 300000000000 bytes
> > 255 heads, 63 sectors/track, 36472 cylinders
> > Units = cylinders of 16065 * 512 = 8225280 bytes
> > Sector size (logical/physical): 512 bytes / 512 bytes
> > I/O size (minimum/optimal): 512 bytes / 512 bytes
> > Disk identifier: 0xe5b8e05c
> >
> >      Device Boot      Start         End      Blocks   Id  System
> > /dev/sdb1               2       36472   292953307+   7  HPFS/NTFS
> >
> >
> > Best
> > javier
>
> Phew!   That's a relief! (for me)
> I've put this message in my draft and just for kicks, I'll share it with
> you..
>
> *draft*
> Extract of http://grub.enbug.org/Grub2LiveCdInstallGuide  :
>
> <extract>
> Step Two: Mounting and chroot'ing
>
> Open a Terminal window and type sudo fdisk -l (That's a lowercase L at
> the end).
> Now this part can be tricky because you have to figure out which one of
> those listed devices is your linux installation. The easiest way is to
> see which one is listed as Linux, so remember this value. Mine was
> /dev/sda1 and so I will use that as reference in this guide.
> If you got a separate /boot partition, you'll have to mount it too.
> <end extract>
>
>
> Javier, I think you have messed up your windows partition as windows
> normally resides in sda1.
>
> chrooting is inherently very risky as you are in root and can do real
> damage. You should be very sure about the partition at sudo fdisk -l
> before you proceed. I myself would not touch chroot.
>
> *undraft*
>
> Javier, if you need me to send you a grub iso,(and you can burn to a cd)
> I'll gladly do so.
>
>
> Take care, regards  - Goh Lip

Dear Goh

I do not understand. I do not have windows on my machine. 
Perhaps you say 
>Javier, I think you have messed up your windows partition as windows
> normally resides in sda1.
because my second drive has an ntfs filesystem. It was there when I bought it,  
but windows has never touched that drive.

In the mean time got a grub iso.
At the grub prompt I typed
linux (hd1,x)/vmlinuz root=/dev/sda1 ro 
initrd (hd1,x)/initrd.img
boot

This returned lots of stuff and then stopped with the cursor blinking for a 
long...time. 
Pressing the enter key returns the initramfs prompt. 

Cheers
javier




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