Tim wrote:
> On Sun, 2008-08-03 at 15:56 -0700, Daniel B. Thurman wrote:
>> What is the command for installing the "MBR" and grub into each
>> of their respective partitions?
>>
>> I tried: grub-install --recheck /dev/sdc1, and likewise for /dev/sdc2
>> and /dev/sdc3 but nothing happens.
>
> I've never bothered with grub-install, other than the one time it
didn't
> do what it was supposed to. After that I decided not to bother with it
> again. I issue the real commands directly:
>
> The grub command to enter a GRUB shell. The root command to tell GRUB
> where /boot will be (and GRUB's root is
> held). The find command to check that GRUB can find the files it
> needs. The setup command to setup which drive MBR to write to, or
which
> partition.
> And the quit command to write all the changes and exit.
> Pasting of a session is below, the GRUB input prompts are beside
> "grub>", the rest is output.
>
> [root@localhost ~]# grub
> Probing devices to guess BIOS drives. This may take a long time.
>
>
> GNU GRUB version 0.97 (640K lower / 3072K upper memory)
>
> [ Minimal BASH-like line editing is supported. For the first word, TAB
> lists possible command completions. Anywhere else TAB lists the
> possible
> completions of a device/filename.]
> grub> root (hd0,0)
> root (hd0,0)
> Filesystem type is ext2fs, partition type 0x83
> grub> find /grub/stage1
> find /grub/stage1
> (hd0,0)
> grub> setup (hd0)
> setup (hd0)
> Checking if "/boot/grub/stage1" exists... no
> Checking if "/grub/stage1" exists... yes
> Checking if "/grub/stage2" exists... yes
> Checking if "/grub/e2fs_stage1_5" exists... yes
> Running "embed /grub/e2fs_stage1_5 (hd0)"... 23 sectors are embedded.
> succeeded
> Running "install /grub/stage1 (hd0) (hd0)1+23 p
> (hd0,0)/grub/stage2 /grub/grub.conf"... succeeded
> Done.
> grub> quit
> quit
> [root@localhost ~]#
>
> My set of examples picks my first boot partition (the root command),
and
> writes back to the disc's MBR (the setup command). You'd change the
> root and setup parameters to suit each installation, to install GRUB
> "stage ones" into each boot partition. In your case, you'd pick the
> same drive and partition for the root and setup commands.
>
> By the way, grub-install is just a script. You can read it and see how
> it works, if you really want to.
Ok, I did. Thanks.
>
>> Since I had copies of /boot for f8 and f9 I simply copied f8's boot
>> files into /dev/sdc2 and f9's boot files into /dev/sdc3 but
>> for /dev/sdc1 (boot-sys), I copied f8's boot files into /dev/sdc1,
>> removed initd*, vm*, and System*, edited grub/grub.conf with the
>> chain-loaders like you said.
>
> Hmm, I don't know exactly what you mean by "boot files". Each /boot
> partition would have that OS's kernel files, and a grub sub-directory
> for that installation's GRUB files (menus, stage loaders, etc.). There
> shouldn't be any need to copy things about.
>
> Inside /boot/grub:
> [snip!]
Yes, that is what I meant by (grub) "/boot files"
>> But I am at loss to figure out how to get each of the 3 partitions
>> with it's own "MBR".
>
> Terminology problem... MBR is Master Boot Record, there's only one of
> them per disc. Initial stages of GRUB can be put in the disc MBR,
or at
> the beginning of individual partitions (not a MBR, but something
> similar, and a mental blank strikes me as to its proper name).
Well, I know there is only one MBR, but I was trying to identify the boot
record for each partition and I did not have a name for it, which is why
I quoted "MBR" - I did not know the proper name either!
HELP! All of my (fedora) drives are no longer bootable! When I boot,
all I get is one message at the top-left corner: "GRUB" I cannot type
anything at this point, it just hangs. So what do I need to do to
recover
grub?
P.S: I tried to re-install grub via Fedora "Live" CD, but it seems I am
unable to.
