Re: Problem installing GRUB2 on a 2.1TB system

[Poe Chen]

Hi, Marco,

Here is the mount output:

address@hidden ~]# mount
/dev/sda2 on / type ext3 (rw)
none on /proc type proc (rw)
none on /sys type sysfs (rw)
none on /dev/pts type devpts (rw,gid=5,mode=620)
usbfs on /proc/bus/usb type usbfs (rw)
/dev/sda1 on /boot type ext3 (rw)
none on /dev/shm type tmpfs (rw)
/dev/sda4 on /home type ext3 (rw)
none on /proc/sys/fs/binfmt_misc type binfmt_misc (rw)
sunrpc on /var/lib/nfs/rpc_pipefs type rpc_pipefs (rw)

And you are right about boot sector with EFI GPT.  I'm having a hard time to get GRUB2 boot even after I install GRUB2 "successfully" on the disk (a different system though).  If I've ever run parted again, it will recover the "corrupted" partition table, GRUB2 is gone....

So is there any plan to support EFI in GRUB2 at all?  =)

For the time being, I'll keep booting from the floppy then....  =)

Thanks a lot,


Poe

On 1/25/06, Marco Gerards <address@hidden> wrote:

Poe Chen <address@hidden> writes:

> I'm the same guy who has successfully floppy boot GRUB2 on a 2.1TB system.
> =)
>
> Here are the problems that I've encountered to get GRUB2 installed onto my
> system running CentOS 4.2 with latest updates.
>
> -grub-probefs can't detect the file system on my server.
>
> Here are the system info:
>
> address@hidden ~]# df -k
> Filesystem           1K-blocks      Used Available Use% Mounted on
> /dev/sda2              4032124   2810480   1016816  74% /
> /dev/sda1               101086     11576     84291  13% /boot
> none                    516768         0    516768   0% /dev/shm
> /dev/sda4            2300710112   1547872 2182292912   1% /home
>
> And here is the result:
>
> address@hidden ~]# grub-probefs -v /dev/sda
> grub-probefs: info: changing current directory to /dev
> grub-probefs: info: changing current directory to cpu
> grub-probefs: info: changing current directory to mapper
> grub-probefs: info: changing current directory to input
> grub-probefs: info: changing current directory to net
> grub-probefs: info: changing current directory to shm
> grub-probefs: info: changing current directory to pts
> cannot find a GRUB device for /dev/sda.

What kind of filesystem do you use?  Can you show the output of
`mount'?

Please be *very* careful with installing on GPT.  The only way to use
GRUB with GPT is by using a floppy.  This is because it does not have
a bootsector.  The intended way of booting such system is by using
EFI.  Unfortunately I don't have such system available and GRUB 2 is
not changed so it can deal with EFI.

Also see my other email regarding this issue:
http://lists.gnu.org/archive/html/grub-devel/2005-11/msg00163.html

Any ideas and suggestions regarding this problem are welcome.  I
expect more people will run into this problem.

Thanks,
Marco



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