[vox-tech] SOLVED - Re: Linux live disk's install attempt onto external drive botched my internal drive's grub!

[Bill Broadley]

Heh, I'm impressed, that's pretty painful and tricky, but you managed it.

An alternative just booting a rescue thumb drive (like most ISO images 
these days).  Normally they have a "reinstall grub" as well as spawning 
a shell option.  If you spawn a shell just run grub-install /dev/sda.

> So all I had to do at that point was tell grub how to boot:
>
>    set root=(hd0,msdos1)
>    set prefix=(hd0,msdos1)/grub
>    insmod normal
>    insmod linux
>    linux (hd0,msdos1)/vmlinuz-3.13.0-51-generic
>    initrd (hd0,msdos1)/initrd.img-3.13.0-51-generic
>    boot
>
> A bunch of kernel boot-up noise appeared, and I was prompted to enter
> the passphrase to decrypt my root (/) directory, and after a moment,
> my KDE login screen appeared!
>
> I brought up a shell, and run "sudo grub-install /dev/sda"
> (notice, not "/dev/sda1").
>
> Rebooted, and here I am.  Whew!