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ubuntu 11.04 from grub4dos


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#1 Krum

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Posted 26 December 2011 - 01:30 AM

I'm trying to figure out the menu.lst entry I need to boot ubuntu linux from grub4dos. The problem is that the ubu now uses grub2, which
bears little resemblance to the older grub; to be honest, the last time I was able to use that, I had to dig into the ubu files and copy out
some ghastly entries with a uuid nine miles long.
It's even more insane now with the grub2, which doesn't *use* a menu.lst!..to top it all off, the grub4dos folks are not ,lately, including
an example specimen of such an entry. Anyone out there know how to write it? Tnx, krum.

#2 batchman61

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Posted 26 December 2011 - 01:38 AM

Hi Krum,

from my grub4dos menu.lst

#
title Ubuntu Desktop 11.04\n ubuntu-11.04-desktop-i386.iso
find --set-root --ignore-floppies /images/ubuntu-11.04-desktop-i386.iso
map /images/ubuntu-11.04-desktop-i386.iso (0xff)
map --hook
root (0xff)
kernel /casper/vmlinuz file=/cdrom/preseed/ubuntu.seed boot=casper iso-scan/filename=/images/ubuntu-11.04-desktop-i386.iso quiet splash --
initrd /casper/initrd.lz
#

#3 Krum

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Posted 26 December 2011 - 05:10 AM

batchman61,
That was fast!; actually I was trying to boot an already installed ubu, which originally had written the grub2 loader for
ubu/xp, which now(the loader) is broken. Yet, I never realized that a mounted iso of the ubu could:

a:)Boot that fast;

b:)Run that fast!!.

I would still like to eventually menu for the installed one, though; note that the UBCD503 which I have in the menu, contains
a 'super grub2' boot utility, and can boot the installed ubu; it's just real kludgey. But again thanks. Krum.

#4 Wonko the Sane

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Posted 26 December 2011 - 01:09 PM

Two questions:
  • What are the contents of your grub.cfg? (grub.cfg is the configuration file for GRUB2)
  • Do you have at your Ubuntu installation a core.img file?

:cheers:
Wonko

#5 Krum

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Posted 26 December 2011 - 08:48 PM

Two questions:

  • What are the contents of your grub.cfg? (grub.cfg is the configuration file for GRUB2)
  • Do you have at your Ubuntu installation a core.img file?

:cheers:
Wonko

Wonko,
as for the core.img, yes I have it, but it will not open in the linux; and when I try to open it in XP using 7zip, it won't open.
Both tries give: "unknown file type". As for the grub.cfg, I can't figure out how to paste it in here; something to do with browser
security settings. Nevertheless, it has the entries for both oses, this after 'sudo update-install', it doesn't get found by grub4dos,
since it's not looking without the menu.lst; should menu.lst look for the core.img? if so, how?. Krum. :idea:

#6 Krum

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Posted 30 December 2011 - 07:02 AM

wonko,
Found on ubuntu forum:

root (hd0,x)
kernel /boot/grub/core.img

where x is, per grub4dos, one less than the partition number of the ubu partition;

also warned that grub on ubu partition might have to be reinstalled:


sudo grub-install /dev/sdax

sudo update- grub.

Tnx all. Krum. :good:

#7 yangjh

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Posted 06 January 2012 - 09:00 AM

up +1 :good:

my menu.lst:


gfxmenu (hd0,0)/grub/message

timeout 10

default 0



title Windows 7 x86 SP1

hide (hd0,2)

unhide (hd0,0)

root (hd0,0)

rootnoverify (hd0,0)

makeactive

chainloader /bootmgr

savedefault --wait=2



title Windows 7 x64 SP1

unhide (hd0,2)

hide (hd0,0)

root (hd0,2)

rootnoverify (hd0,2)

makeactive

chainloader /bootmgr

savedefault --wait=2



title ubuntu

root (hd0,5)

rootnoverify

kernel /boot/grub/core.img

boot




Edited by yangjh, 06 January 2012 - 09:01 AM.





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