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bigbangnet
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Naib
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 Posted: Thu Jun 28, 2012 8:14 pm Post subject: |
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| Quote: | [I] sys-boot/grub
Available versions:
(0) *0.92-r1 0.94-r1 0.96-r1 0.96-r2 (~)0.96-r3 (~)0.97 0.97-r2 0.97-r3 0.97-r4 0.97-r5 0.97-r6 (~)0.97-r8 0.97-r9 0.97-r10 (~)0.97-r11 (~)0.97-r12
(2) **1.99-r2 **2.00_beta6 **2.00 **9999
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yngwin
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| Posted: Fri Jun 29, 2012 8:41 am Post subject: |
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Make sure to change your world file to have sys-boot/grub:0 (slot zero) to keep current grub, unless you want to downgrade to grub-2. 
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bigbangnet
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| Posted: Fri Jun 29, 2012 12:02 pm Post subject: updates ! |
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Time to do updates then. It seems I haven't done some in a while. 
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padoor
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| Posted: Sat Jun 30, 2012 2:32 pm Post subject: |
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| yngwin wrote: | | Make sure to change your world file to have sys-boot/grub:0 (slot zero) to keep current grub, unless you want to downgrade to grub-2. |
how the world file has to be edited to get this effect?
right now my laptop is dead after todays update no bios showing up
can it be due to grub 2.00 ?/
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genstorm
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Location: Austria
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| Posted: Sat Jun 30, 2012 3:29 pm Post subject: |
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When there's not even BIOS showing up it can't be grub's fault.
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padoor
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| Posted: Sat Jun 30, 2012 5:35 pm Post subject: |
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the screen comes up once in 8 trials.
then once i saw an IDE#1 error,
i am able to boot gentoo installer cd and chroot and unmerged grub-2.00
there is something grub 2 has written in MBR and remerging grub 07 did not help
as chroot works fine i cant say hdd is faulty
how can i go about repairs?
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DaggyStyle
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| Posted: Sat Jun 30, 2012 5:41 pm Post subject: |
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is there a major diff between 1.99 and 2? I'm using 1.99 and I think that 2 might be better but I don't want to stay without a working system.
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VoidMage
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| Posted: Sat Jun 30, 2012 5:52 pm Post subject: |
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| Well, technically 1.99 was (sort of) a (pre-)beta for 2.00. |
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DaggyStyle
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| Posted: Sat Jun 30, 2012 6:31 pm Post subject: |
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| VoidMage wrote: | | Well, technically 1.99 was (sort of) a (pre-)beta for 2.00. |
I know but it isn't a small program, if there is an issue, my comp won't boot and the wife will execute me on the spot...
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VoidMage
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| Posted: Sat Jun 30, 2012 7:34 pm Post subject: |
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| DaggyStyle wrote: | | VoidMage wrote: | | Well, technically 1.99 was (sort of) a (pre-)beta for 2.00. |
I know but it isn't a small program, if there is an issue, my comp won't boot and the wife will execute me on the spot... |
That's nothing. Have you tried installing grub2 to UEFI on an GPT partitioned disk from 10.0 LiveDVD ?
That was more than a bit tricky (due to lack of good docs and incomplete kernel support). |
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wrc1944
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| Posted: Sat Jun 30, 2012 10:00 pm Post subject: |
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When I saw this grub 2 update today, I quickly masked it (>=sys-boot/grub-2.00) in /etc/portage, and after reading developer yngwin's comment above, I slotted legacy grub in the world file. Am I safe from it now?
I have mixed experiences with grub 2 in other distros where I hardly ever build my own kernels, and didn't like it one bit. IMO, it's more trouble than the advertised advantages are worth, especially if you like to build a lot of your own kernels. Ditto for the UEFI bios.
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Naib
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| Posted: Sat Jun 30, 2012 11:24 pm Post subject: |
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Well grub2 upgrade was actually REALLY simple.
I already use "make install" for new kernels so the auto gen script is aligned to the kernel names
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yngwin
Developer
Joined: 19 Dec 2002
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Location: Suzhou, China
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| Posted: Sun Jul 01, 2012 4:29 am Post subject: |
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| padoor wrote: | | yngwin wrote: | | Make sure to change your world file to have sys-boot/grub:0 (slot zero) to keep current grub, unless you want to downgrade to grub-2. |
how the world file has to be edited to get this effect? |
As root (or sudo), do:
| Code: | | sed -i -e 's|sys-boot/grub|sys-boot/grub:0|' /var/lib/portage/world |
| padoor wrote: | right now my laptop is dead after todays update no bios showing up
can it be due to grub 2.00 ?/ |
No. That sounds more like hardware failure. Either way, even if you have grub-2 installed, it shouldn't affect your boot unless you run grub-install.
| wrc1944 wrote: | | Am I safe from it now? |
Yes 
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DaggyStyle
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Joined: 22 Mar 2006
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| Posted: Sun Jul 01, 2012 9:49 am Post subject: |
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| VoidMage wrote: | | DaggyStyle wrote: | | VoidMage wrote: | | Well, technically 1.99 was (sort of) a (pre-)beta for 2.00. |
I know but it isn't a small program, if there is an issue, my comp won't boot and the wife will execute me on the spot... |
That's nothing. Have you tried installing grub2 to UEFI on an GPT partitioned disk from 10.0 LiveDVD ?
That was more than a bit tricky (due to lack of good docs and incomplete kernel support). |
I'm pretty sure I've tried and pretty sure I didn't done it right as my system boots  .
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VoidMage
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| Posted: Sun Jul 01, 2012 10:35 am Post subject: |
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| Well, I'm not saying I didn't succeed in the end, but getting there was quite troublesome. |
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hydrapolic
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Joined: 07 Feb 2008
Posts: 69
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| Posted: Mon Jul 02, 2012 11:22 am Post subject: |
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A successful story of upgrading grub-0.97 to grub-2.00 on a pc:
# echo 'GRUB_PLATFORMS="pc"' >> /etc/make.conf
# emerge grub:2
# grub2-install /dev/sda
This produced a warning:
/usr/sbin/grub-setup: warn: Sector 32 is already in use by FlexNet; avoiding it. This software may cause boot or other problems in future. Please ask its authors not to store data in the boot track..
/usr/sbin/grub-setup: warn: Sector 33 is already in use by FlexNet; avoiding it. This software may cause boot or other problems in future. Please ask its authors not to store data in the boot track..
I zeroed out those sectors:
# dd if=/dev/zero of=/dev/sda bs=512 count=2 seek=32
# grub2-install /dev/sda
# cat /boot/grub2/grub.cfg
timeout=10
menuentry 'Gentoo 3.3.8' {
root=hd0,1
linux /kernel-3.3.8-gentoo root=/dev/sda2
}
Kernel is located at: /boot/kernel-3.3.8-gentoo
Thanks for the guide (http://wiki.gentoo.org/wiki/GRUB2_Quick_Start) and the effort ! |
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SDNick484
Tux's lil' helper
Joined: 05 Dec 2005
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| Posted: Tue Jul 03, 2012 6:04 pm Post subject: |
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| Are there any major value adds in upgrading to Grub2 for a simple laptop use (no LVM/EFI/etc.)? Like others, I've used it on non-Gentoo distros in the past and have not had a pleasant experience. |
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Gusar
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| Posted: Tue Jul 03, 2012 6:34 pm Post subject: |
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| SDNick484 wrote: | | Are there any major value adds in upgrading to Grub2 for a simple laptop use (no LVM/EFI/etc.)? |
No. And even on EFI, grub2 is the last thing to use. Fedora has hacked efi support into grub1, they found that to be more reliable than grub2. And with the latest kernels that have efi_stub, you don't need a bootloader at all, efi can load the kernel directly.
I use syslinux everywhere, except on my crazy netbook which doesn't like syslinux. The netbook now uses lilo |
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SDNick484
Tux's lil' helper
Joined: 05 Dec 2005
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| Posted: Tue Jul 03, 2012 7:31 pm Post subject: |
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| Gusar wrote: | | SDNick484 wrote: | | Are there any major value adds in upgrading to Grub2 for a simple laptop use (no LVM/EFI/etc.)? |
No. And even on EFI, grub2 is the last thing to use. Fedora has hacked efi support into grub1, they found that to be more reliable than grub2. And with the latest kernels that have efi_stub, you don't need a bootloader at all, efi can load the kernel directly.
I use syslinux everywhere, except on my crazy netbook which doesn't like syslinux. The netbook now uses lilo |
Interesting, thanks for the info. I've heard of using syslinux/extlinux as a full system bootloader (as opposed to a CD/DVD) recently, but hadn't tried it yet myself yet. While I'm generally keen on trying new things, I've found from experience that bootloaders are one of those things like firmware that are generally better suited for the if it ain't broke, don't fix it strategy... |
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yngwin
Developer
Joined: 19 Dec 2002
Posts: 4389
Location: Suzhou, China
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| Posted: Wed Jul 04, 2012 9:37 am Post subject: |
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| SDNick484 wrote: | | Are there any major value adds in upgrading to Grub2 for a simple laptop use (no LVM/EFI/etc.)? Like others, I've used it on non-Gentoo distros in the past and have not had a pleasant experience. |
No, if grub:0 works for you, then going to grub:2 would be a downgrade in terms of complexity and maintenance.
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Naib
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Joined: 21 May 2004
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Location: UK - Birmingham
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| Posted: Wed Jul 04, 2012 9:52 am Post subject: |
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| yngwin wrote: | | SDNick484 wrote: | | Are there any major value adds in upgrading to Grub2 for a simple laptop use (no LVM/EFI/etc.)? Like others, I've used it on non-Gentoo distros in the past and have not had a pleasant experience. |
No, if grub:0 works for you, then going to grub:2 would be a downgrade in terms of complexity and maintenance. |
what is the likelyhood that grub1 will be maintained though?
thats the only reason I converted to grub2 simply because if that is now classed as legacy and is no longer worked on... gentoo policy is if there is no upstream support to pull a project.
and yes grub2 is more hassle... having to run a command after a new kernel was why I converted from lilo to grub all that time ago
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DaggyStyle
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Joined: 22 Mar 2006
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| Posted: Wed Jul 04, 2012 10:56 am Post subject: |
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| yngwin wrote: | | SDNick484 wrote: | | Are there any major value adds in upgrading to Grub2 for a simple laptop use (no LVM/EFI/etc.)? Like others, I've used it on non-Gentoo distros in the past and have not had a pleasant experience. |
No, if grub:0 works for you, then going to grub:2 would be a downgrade in terms of complexity and maintenance. |
huh?
so the "official" suggestion is to keep using grub 1 over grub 2?
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LiamOS
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Joined: 06 Jun 2012
Posts: 56
Location: Kerry/Dublin, Ireland
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| Posted: Wed Jul 04, 2012 2:06 pm Post subject: |
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I did a recent installation and noticed grub was behaving really weird; I quickly realised I'd emerged grub2, which was a nasty surprise. 
Is Grub legacy going to remain an option indefinitely? I'm a bit worried, since my experiences with grub2 have been far from fun.
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VoidMage
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| Posted: Wed Jul 04, 2012 4:10 pm Post subject: |
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| AFAICT, on simple setups, there should be no noticeable difference between grub1 and grub2. |
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