On 05/22/2015 06:37 PM, ToddAndMargo wrote:
On 05/22/2015 06:31 PM, ToddAndMargo wrote:
On 05/22/2015 05:15 PM, Konstantin Olchanski wrote:
On Fri, May 22, 2015 at 01:43:08PM -0700, ToddAndMargo wrote:
After installing the above, the boot order came up with the
two rescue modes on top. Would you please correct this?
This is a feature of grub2. In grub1, the order was specified manually
in grub.conf. In grub2, the order is magically created by a mess of bash
scripts. When installing a new kernel, it magically runs
some magic commands to make itself the default kernel to boot. None of
this
is documented anywhere.
If you want sane booting, switch to syslinux.
Hi Konstantin,
I have been working on a direct install Xfce Fedora 21 flash
drive. I had to tweak the /boot/grub2/grub.cfg to get it
to boot off of all machine. (Which it does, unlike Live
USB -- faster too).
In FC21's Grub.cfg, the "menuentry" are all appear in order
on the boot screen. And, the "rescue" appears at the bottom.
Is the problem I noticed, a EL7 issue? I logged into the
SL7 hard drive (that won't boot) with my Live CD and took
a peek at grub.cfg, and that is the way they were written.
And YIKES! A Boo-boo in grub.cfg. Look at this:
menuentry 'Scientific Linux 7.1 Rescue 95621d90ac5d4ae8a262fd52ed537a16
(3.10.0-229.1.2.el7.x86_64)' --class fedora --class gnu-linux --class
gnu --class os --unrestricted $menuentry_id_option
'gnulinux-3.10.0-229.1.2.el7.x86_64-advanced-562d91f4-7086-451e-abc1-870f59bf3c41'
{
....systemd.debug
}
initrd16 /initramfs-0-rescue-95621d90ac5d4ae8a262fd52ed537a16.img
^^^^^^^^stray line that should have been above the "}" bracket ^^^^^^^
menuentry 'Scientific Linux 7.1 Rescue 95621d90ac5d4ae8a262fd52ed537a16
(3.10.0-229.1.2.el7.x86_64) with debugging' --class fedora --class
gnu-linux --class gnu --class os --unrestricted $menuentry_id_option
'gnulinux-3.10.0-229.1.2.el7.x86_64-advanced-562d91f4-7086-451e-abc1-870f59bf3c41'
{
load_video
...
This happened on the top two, but on the bottom third one.
Correcting that those two boo-boos made it so the "rescue"
sections could boot. But the main section (Nitrogen) give
a kernel panic:
Failed to access perfctr msr (MSR c1 is 0)
kernel panic -- not syncing:L VFS: Unable to mount root fs on
unknown-block(0,0)
I documented it over on:
https://bugzilla.redhat.com/show_bug.cgi?id=1224434
-T
Additional info:
If I comment out the "linux16" entry from the Nitrogen menuentry, the
kernel panic goes away and I can boot normally.
Also, putting the ending bracked ("}") in the right place on the two
duplicate rescue menuentries also enables it to boot.
OOps on the linux 16. I was in Fedora Live.
--
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Computers are like air conditioners.
They malfunction when you open windows
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