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manu_leo
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Joined: 20 Jan 2014
Posts: 513
Location: India
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 Posted: Thu Nov 20, 2014 7:51 pm Post subject: [SOLVED] Not able to run grub2-install /dev/sda |
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Hi Expert, I am totally stuck at a point and not able to figure out how to fix the below error message. I am doing a fresh install on a Server and while running the command ' grub2-install /dev/sda' , I am getting the below error message :-
| Code: | livecd ~ # grub2-install /dev/sda
Installing for i386-pc platform.
grub2-install: warning: Attempting to install GRUB to a disk with multiple partition labels. This is not supported yet..
grub2-install: warning: Embedding is not possible. GRUB can only be installed in this setup by using blocklists. However, blocklists are UNRELIABLE and their use is discouraged..
grub2-install: error: will not proceed with blocklists. |
I am not sure why is it says - | Code: | | installing for the i386-pc platform |
| Code: | uname -a
Linux livecd 3.16.5-gentoo #1 SMP Thu Nov 13 06:29:04 UTC 2014 x86_64 Intel(R) Xeon(R) CPU X7560 @ 2.27GHz GenuineIntel GNU/Linux
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Appreciate all your help in advance.
Last edited by manu_leo on Wed Nov 26, 2014 11:45 am; edited 1 time in total |
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Fitzcarraldo
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Joined: 30 Aug 2008
Posts: 2034
Location: United Kingdom
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| Posted: Thu Nov 20, 2014 9:47 pm Post subject: |
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| manu_leo wrote: | I am not sure why is it says - | Code: | | installing for the i386-pc platform |
| Code: | uname -a
Linux livecd 3.16.5-gentoo #1 SMP Thu Nov 13 06:29:04 UTC 2014 x86_64 Intel(R) Xeon(R) CPU X7560 @ 2.27GHz GenuineIntel GNU/Linux
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That should be OK if the CPU architecture is x86_64 and the machine uses PC BIOS. See http://wiki.gentoo.org/wiki/GRUB2_Quick_Start
| GRUB2 Quick Start wrote: | | grub2-install accepts a --target option to specify which CPU/Platform to install. If unspecified, grub2-install will make a guess; on amd64/x86 it will use "i386-pc" by default. |
See also http://wiki.gentoo.org/wiki/GRUB2
In my Gentoo ~amd64 PC BIOS installation:
| Code: | # ls /boot/grub/
fonts grub.cfg.20130603 grub.cfg.20140108 grub.cfg.20140401 grubenv locale themes
grub.cfg grub.cfg.20131102 grub.cfg.20140226 grub.cfg.20140402 i386-pc mybackground.png
# uname -a
Linux meshedgedx 3.17.1-gentoo-r1 #1 SMP Wed Nov 5 16:41:59 GMT 2014 x86_64 Intel(R) Core(TM) i7 CPU Q 720 @ 1.60GHz GenuineIntel GNU/Linux |
Notice the directory /boot/grub/i386-pc/
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manu_leo
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Joined: 20 Jan 2014
Posts: 513
Location: India
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| Posted: Wed Nov 26, 2014 4:07 am Post subject: |
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Thanks for looking into this.
Actually, what happened is that the total HDD size is 16Tb in my server and I used fdisk to create partitions tables -boot, swap and so on. Because fdisk does not support partitioning more than 2 Tb, that is what caused the below error :-
| Code: | livecd ~ # grub2-install /dev/sda
Installing for i386-pc platform.
grub2-install: warning: Attempting to install GRUB to a disk with multiple partition labels. This is not supported yet..
grub2-install: warning: Embedding is not possible. GRUB can only be installed in this setup by using blocklists. However, blocklists are UNRELIABLE and their use is discouraged..
grub2-install: error: will not proceed with blocklists. |
I used parted command to do the partition and the grub2-install /dev/sda comes without any error message.
Appreciate all your help. |
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manu_leo
Guru
Joined: 20 Jan 2014
Posts: 513
Location: India
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| Posted: Wed Nov 26, 2014 11:45 am Post subject: [SOLVED] Re: Not able to run grub2-install /dev/sda |
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| manu_leo wrote: | Hi Expert, I am totally stuck at a point and not able to figure out how to fix the below error message. I am doing a fresh install on a Server and while running the command ' grub2-install /dev/sda' , I am getting the below error message :-
| Code: | livecd ~ # grub2-install /dev/sda
Installing for i386-pc platform.
grub2-install: warning: Attempting to install GRUB to a disk with multiple partition labels. This is not supported yet..
grub2-install: warning: Embedding is not possible. GRUB can only be installed in this setup by using blocklists. However, blocklists are UNRELIABLE and their use is discouraged..
grub2-install: error: will not proceed with blocklists. |
I am not sure why is it says - | Code: | | installing for the i386-pc platform |
| Code: | uname -a
Linux livecd 3.16.5-gentoo #1 SMP Thu Nov 13 06:29:04 UTC 2014 x86_64 Intel(R) Xeon(R) CPU X7560 @ 2.27GHz GenuineIntel GNU/Linux
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Appreciate all your help in advance. |
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charles17
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Joined: 02 Mar 2008
Posts: 3664
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mistreated
n00b
Joined: 03 Dec 2006
Posts: 26
Location: Riga, Latvia
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| Posted: Fri Oct 20, 2017 9:39 am Post subject: |
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Just want to post my solution to the above problem, since someone will probably find this thread searching by error message.
Symptoms were the same:
| Code: |
# grub-install /dev/sda
Installing for i386-pc platform.
grub-install: warning: Attempting to install GRUB to a disk with multiple partition labels. This is not supported yet..
grub-install: warning: Embedding is not possible. GRUB can only be installed in this setup by using blocklists. However, blocklists are UNRELIABLE and their use is discouraged..
grub-install: error: will not proceed with blocklists.
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The reason was different. Once I accidentally dd iso imange to my /dev/sda instead of USB flash drive... Yes, such things happen occasionally. 
Despite I recreated all partitions some signatures were left on the drive. Similar thing might happen when there used to be a DOS partitioning and you are migrating to GPT.
Utility wipefs can help to view and remove these old signatures.
| Code: |
# wipefs /dev/sda
offset type
----------------------------------------------------------------
0x200 gpt [partition table]
0x8001 iso9660 [filesystem]
LABEL: Fedora-KDE-Live-26-1-5
UUID: 2017-07-05-22-12-15-00
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Above you can see which image I was intending to writer to the flash drive.  There should be gpt only, so here's the solution:
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# wipefs -o 0x8001 /dev/sda
/dev/sda: 5 bytes were erased at offset 0x00008001 (iso9660): 43 44 30 30 31
# wipefs /dev/sda
offset type
----------------------------------------------------------------
0x200 gpt [partition table]
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P.S.
wipefs won't run on the drive which has mounted partitions, so all /dev/sda* have to be unmounted in prior.
If you are booted from the livecd and running the Gentoo installation from chrooted shell, then you can refer to the Handbook (Installation/Bootloader) on how to correctly unmount /dev/sda* partitions and then go back to the Handbook (Installation/Base) if you have forgotten how to chroot. |
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