On Sun, Oct 30, 2016 at 9:21 PM, Ken Moffat <zarniwh...@ntlworld.com> wrote:
> On Sun, Oct 30, 2016 at 09:25:06PM -0400, jacob wrote:
> >
> > I am using chainloading probably incorrectly here, sorry, I shall
> explain a
> > few things regarding my setup. I'm essentially attempting to boot LFS
> > through UEFI in 2 different ways - Through the LFS install with LFS's
> grub,
> > and through Arch grub. Unrelated to the issue, UEFI indeed works on
> grub2,
> > because I have an entry on my UEFI for arch linux that successfully boots
> > arch. UEFI booting also works on the arch iso from a USB drive. However,
> I
> > can't say UEFI works on LFS personally as of yet.
> >
>
> The LFS grub is probably incorrectly built for UEFI. But unless you
> chainload, only one bootloader (i.e. Arch's grub, unless you
> overwrite it) is likely to be used. Hmm, I suppose that might not
> be true for UEFI - but first you need to get both your LFS kernel
> and the stanza in Arch's grub.cfg to work.
>
> Only after that should you think about installing grub from LFS.
>
> > Referring to arch grub, I'm specifically pointing out the generated entry
> > for LFS to boot its kernel on it:
> >
> > menuentry 'Linux From Scratch (7.10-systemd) (on /dev/sdc2)' --class
> > linuxfromscratch --class gnu-linux --class gnu --class os
> > $menuentry_id_option
> > 'osprober-gnulinux-simple-d6788259-f948-4164-ae29-d1b996ffd6d9' {
> > insmod part_gpt
> > insmod ext2
> > set root='hd2,gpt2'
> > if [ x$feature_platform_search_hint = xy ]; then
> > search --no-floppy --fs-uuid --set=root --hint-bios=hd2,gpt2
> > --hint-efi=hd2,gpt2 --hint-baremetal=ahci2,gpt2
> > d6788259-f948-4164-ae29-d1b996ffd6d9
> > else
> > search --no-floppy --fs-uuid --set=root
> > d6788259-f948-4164-ae29-d1b996ffd6d9
> > fi
> > linux /boot/vmlinuz-4.7.2-lfs-7.10-systemd
>
> I note you don't care about the recent Dirty COW vulnerability. But
> since it doesn't boot, that kernel version is the least of your problems.
> But when it does boot, safest to upgrade to any stable kernel
> released after 20th October - my notes say 4.7.9, 4.8.3, 4.4.26 or
> later - but for other people, some old stable kernels were also
> fixed.
>
He probably doesn't know about it.
This is why I want *more* transparency in our fixing of security issues.
Communication is key, and with the other vulnerabilities that are
discovered daily that our users are affected by, and the impact that they
can have, it is the least that we can do is to keep them informed.
Wasn't that what the old lfs-security mailing list was for?
>
> > root=UUID=d6788259-f948-4164-ae29-d1b996ffd6d9 rootfstype=ext4 ro
> > }
> >
>
> Is the UUID correct for the LFS partition ?
> > Either way when booting from both entry's regardless of which grub it
> fails
> > to boot. linux /boot/vmlinuz-4.7.2-lfs-7.10-systemd
> > root=UUID=d6788259-f948-4164-ae29-d1b996ffd6d9 rootfstype=ext4 ro is the
> > exact same on the LFS grub entry even, with my latest slight
> modifications
> > for testing and revisioning.
>
> Does the Arch grub give you a graphical screen ? If so, try adding
> 'nomodeset' to the grub command line.
>
> I also found an old (ubuntu) report that UEFI does not support
> booting in text mode. Dunno, I've got enough trouble with BIOS
> hardware.
>
> ĸen
> --
> `I shall take my mountains', said Lu-Tze. `The climate will be good
> for them.' -- Small Gods
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Do not top post on this list.
A: Because it messes up the order in which people normally read text.
Q: Why is top-posting such a bad thing?
A: Top-posting.
Q: What is the most annoying thing in e-mail?
http://en.wikipedia.org/wiki/Posting_style
