Re: Newb Needs Help with Boot Recovery

[Simon Hobson]

zcorker <address@hidden> wrote:

> I am wondering if someone can offer some advice on how to configure my 
> system, so that I can bootup?  I am getting an error message when running 
> Lubuntu recovery tool (2013 vintage), indicating that "please enable a 
> repository containing the [grub2] package in the software sources for Centos 
> release 6.7 (sda2).  Then try again.".  A review of my Centos files in 
> Lubuntu indicates I am running Grub, and nog Grub 2, so I assume my recovery 
> disk isn't capable of supporting grub, but I don't know.  The reason there is 
> a boot issue is because I had replaced a drive and power supply after they 
> had failed.  I had tarred over the files from the failing drive to the new 2 
> TB SSD, and I have run triple boot between Debian, Win XP, Centos, with no 
> problem at all.  What would be the easiest way to fix the computer?

OK, as I read it, you've copied all the files over, but don't have a bootloader 
installed and so can't boot it ?

You might try http://www.supergrubdisk.org to get booted into your copied 
across system, and when you've booted into that, you should be able to just do 
a grub-install to install the first stage onto your new disk. If there have 
been any partition/filesystem layout changes then you may also need to update 
/etc/fstab and update-grub as well.

Someone on another list suggested SuperGrubDisk when I had a problem, and it 
sure did make life easy :-) The alternative is to use the bootloader on another 
disk, then manually setup the root and kernel stuff etc to get it to boot your 
copied OS. It's how I've done things in the past, but it can be tricky to get 
just right.