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<H1>[Mageia-dev] Grub2 vs. Grub Legacy in M3</H1>
<B>Felix Miata</B>
<A HREF="mailto:mageia-dev%40mageia.org?Subject=Re%3A%20%5BMageia-dev%5D%20Grub2%20vs.%20Grub%20Legacy%20in%20M3&In-Reply-To=%3C510CB820.6070005%40earthlink.net%3E"
TITLE="[Mageia-dev] Grub2 vs. Grub Legacy in M3">mrmazda at earthlink.net
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<I>Sat Feb 2 07:54:24 CET 2013</I>
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<PRE>On 2013-02-02 00:48 (GMT-0500) Felix Miata composed:
><i> # urpmi --no-suggests grub2
</I>
><i> which installed only grub2 and os-prober, and took several minutes to
</I>><i> complete (which the known lethargic os-prober is obviously responsible for).
</I>
><i> I added a stanza to my master bootloader to load /boot/grub2/i386-pc/core.img
</I>><i> and rebooted, selecting the /boot/grub2/i386-pc/core.img stanza. Results:
</I>
><i> Good start:
</I>><i> 1-/boot/grub2/i386-pc/core.img in a Grub Legacy stanza succeeds
</I>
><i> Not good from then on:
</I>><i> 1-Grub2 error message due to not finding some png file
</I>
><i> 2-25 item Grub 2.00 menu (grub.cfg:
</I>><i> <A HREF="http://fm.no-ip.com/Tmp/Linux/Mdv/grub.cfg.gx27b-cauldron3-1.txt">http://fm.no-ip.com/Tmp/Linux/Mdv/grub.cfg.gx27b-cauldron3-1.txt</A> ). After
</I>><i> selecting a selection from a master bootloader, there's no good reason to see
</I>><i> similar selections as in the previous menu unrelated to the chosen selection.
</I>><i> IOW, when not a master bootloader (i.e. "chainloaded" via core.img, only
</I>><i> Mageia entries attributable to selected filesystem hosting core.img should be
</I>><i> in this menu.
</I>
><i> 3-Grub2 menu uses same awful spindly-looking font responsible in large part
</I>><i> for my distaste for *buntu
</I>
><i> 4-default menu selection for Cauldron causes this cmdline:
</I>
><i> BOOT_IMAGE=/boot/vmlinuz-prv root=UUID=bbe8a402-5fb1-4247-b372-5bb6cff4e18c
</I>><i> ro splash
</I>
><i> which is nothing like the default Grub Legacy menu stanza's cmdline result:
</I>
><i> root=LABEL=22cauldrn splash=verbose noresume video=1152x864 vga=794 3
</I>
><i> obviously caused by Grub2 installation disregarding content of pre-existing
</I>><i> menu.lst, which means
</I>
><i> 5-semi-legible blue on black graphical progress bar instead of normal
</I>><i> complement of startup messages when splash=verbose
</I>
><i> 6-post ESC, startup messages are inappropriately tiny
</I>
><i> 7-tty text is too tiny to use (same as startup messages; screen's preferred
</I>><i> mode 1600x1200 used instead of legible mode 1152x864)
</I>
><i> 8-KDM is on tty2, the location I reserve for certain class of recurring
</I>><i> activities, instead of where expected on tty7
</I>
><i> 9-preferred initial runlevel as evidenced by menu.lst cmdline options was not
</I>><i> specified
</I>
><i> 10-tty1 cleared before displaying login prompt (even after customizing
</I>><i> /etc/systemd/sytem/getty.target.wants/<A HREF="https://www.mageia.org/mailman/listinfo/mageia-dev">getty at tty1.service</A> with
</I>><i> s/TTYVTDisallocate=yes/TTYVTDisallocate=no/; same problem on Rawhide &
</I>><i> Factory; OT)
</I>
><i> Such displeasures as 1-9 are the reason why in Grub Legacy vs. Grub2
</I>><i> discussions I point out that Grub2 is still v1.0 software. Just how much of
</I>><i> these observations are due to upstream decisions or yet-to-dos rather than
</I>><i> distro implementation decisions, implementor inexperience or bugs I won't try
</I>><i> to guess.
</I>
After editing /etc/default/grub, grub2-mkconfig isn't too bright about
choosing a default kernel/initrd pair:
<A HREF="http://fm.no-ip.com/Tmp/Linux/Mdv/grub.cfg.04">http://fm.no-ip.com/Tmp/Linux/Mdv/grub.cfg.04</A>
It selected initrd-prv and vmlinuz-prv as default, which are symlinks to the
previously installed kernel.
Upstream still has a warning about use of vga= on cmdline, which is still
valid when KMS is disabled, and when non-Plymouth user wants kernel to use
specified vga= mode instead of 80x25 in the brief init period prior to KMS
initialization.
--
"The wise are known for their understanding, and pleasant
words are persuasive." Proverbs 16:21 (New Living Translation)
Team OS/2 ** Reg. Linux User #211409 ** a11y rocks!
Felix Miata *** <A HREF="http://fm.no-ip.com/">http://fm.no-ip.com/</A>
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