On 12/04/17 18:15, Michael Orlitzky wrote:
On 12/04/2017 09:13 PM, Daniel Frey wrote:
Well, it copies from /usr/share/grub and /lib/grub to /boot/grub, and
the sum of those directories are 270M without any kernels, etc
installed. I guess I'm going to have to tarball everything up,
repartition, and untar it.
I guess I'll have to remember to use 500M+ /boot partitions now. Sigh.
Before you do all that, some people on the bug have reported that the
larger binaries are busted and won't boot.
I can confirm that: right after I posted, I rebooted and all hell broke
loose. I just got booted up again (I'd already removed gcc-5) using grub2.
I was genuinely annoyed with grub2 due to its update and massive config
files, so I never upgraded to it. I usually had multiple kernel versions
and grub2 helpfully labeled them all "Linux" so I couldn't tell them apart.
I figured out you can still write your own grub2 files, and it wasn't
that difficult, other than its numbering is different now (no base-0
partitions... argh.)
Below is an example of a simple grub.cfg that starts two separate
kernels (I use a different kernel/partition for MythTV) and a
chainloader for Windows 7. It took a few iterations for me to get
everything to boot.
My partitions are as follows:
/dev/sda1: Windows tiny partition, the bootable one
/dev/sda2: Windows 7
/dev/sda3: /boot
As you can see, there's no base-0 counted partitions in the config, that
messed me up more than once.
I also used PARTUUID for the root= parameter, you can get this by using
`blkid /dev/sdaX`. Also, don't encapsulate your PARTUUID in quotes, that
didn't work for me. I simply had (as an example)
root=PARTUUID=abcdef33-01 and it boots fine.
It was simple enough to convert (and grub-2.02 actually compiles fine
with gcc-6 and the new profile) and figured others were probably like me
and avoiding the grub2 config mess.
At least now I know how to configure grub2 manually and simply, so I
won't avoid it any more.
Dan
------grub.cfg------
timeout=10
default=0
menuentry 'Gentoo 4.1.43-r1' {
root=hd0,3
linux /boot/kernel-4.1.43-gentoo-r1 root=PARTUUID=<your
PARTUUID> quiet rootfstype=ext4
}
menuentry 'Gentoo - MythTV' {
root=hd0,3
linux /boot/kernel-4.1.43-gentoo-r1-mythtv root=PARTUUID=<your
PARTUUID> quiet rootfstype=ext4
}
menuentry "Windows 7" {
set root=(hd0,1)
chainloader +1
boot
}
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