[arch-general] Editing grub for dual boot?
Hello again!Thanks much for the warm welcome and good advice.I have another issue in that i seem unable to have both arch and ghost bsd on the same system/drive. If i install bsd last the boot manager sees but cannot boot arch. If i install arch last, grub doesn't see the bsd at all.Apparently i need to edit grub so as to point it to the second os. Does anyone have advice how to do so, or references to a wiki, etc? Any thanks!peace-bill
To boot FreeBSD I needed to add a chainloader to the Linux's grub.cfg.
menuentry "FreeBSD"{ set root=(hd0,msdos1) chainloader +1 }
Note, at least FreeBSD needs to be on a primary or GPT partition.
Did you try running
# grub-mkconfig -o /boot/grub/grub.cfg or, for UEFI-GPT Mode (As per #Alternative install method):
# grub-mkconfig -o /boot/efi/EFI/GRUB/grub.cfg after installing bsd? Often it recognizes other OSes on its own. If not, installing os-prober and running grub-mkconfig … Again might help.
Regards, Lukas
On 19 Apr 2016, at 00:43, bill billwx@live.com wrote:
Hello again!Thanks much for the warm welcome and good advice.I have another issue in that i seem unable to have both arch and ghost bsd on the same system/drive. If i install bsd last the boot manager sees but cannot boot arch. If i install arch last, grub doesn't see the bsd at all.Apparently i need to edit grub so as to point it to the second os. Does anyone have advice how to do so, or references to a wiki, etc? Any thanks!peace-bill
Do you have os-prober installed?
https://wiki.archlinux.org/index.php/GRUB says, in part:
Dual-booting Tip: To have grub-mkconfig search for other installed systems, install os-prober.
I used architect to install this time, and os-prober wasn't installed by default.
On 04/18/2016 06:43 PM, bill wrote:
Hello again!Thanks much for the warm welcome and good advice.I have another issue in that i seem unable to have both arch and ghost bsd on the same system/drive. If i install bsd last the boot manager sees but cannot boot arch. If i install arch last, grub doesn't see the bsd at all.Apparently i need to edit grub so as to point it to the second os. Does anyone have advice how to do so, or references to a wiki, etc? Any thanks!peace-bill
Hi all,
BSD is on a primary so that's not the issue.
When i added this to grub.cfg it puts the bsd option in my grub at bootup, but when i select it i get the error "invalid signature." I tried replacing msdos1 with msdos3 since my bsd is on the third primary partition, but same result. I have checked the syntax several times. Does this error have to do with my placement within the file (near the end before memtest) or another error? Many thanks! peace -bill
Date: Tue, 19 Apr 2016 01:04:36 +0200 From: silver.bullet@zoho.com To: arch-general@archlinux.org Subject: Re: [arch-general] Editing grub for dual boot?
To boot FreeBSD I needed to add a chainloader to the Linux's grub.cfg.
menuentry "FreeBSD"{ set root=(hd0,msdos1) chainloader +1 }
Note, at least FreeBSD needs to be on a primary or GPT partition.
On 23-04-2016 22:41, bill . wrote:
Hi all,
BSD is on a primary so that's not the issue.
When i added this to grub.cfg it puts the bsd option in my grub at bootup, but when i select it i get the error "invalid signature." I tried replacing msdos1 with msdos3 since my bsd is on the third primary partition, but same result. I have checked the syntax several times. Does this error have to do with my placement within the file (near the end before memtest) or another error? Many thanks! peace -bill
Date: Tue, 19 Apr 2016 01:04:36 +0200 From: silver.bullet@zoho.com To: arch-general@archlinux.org Subject: Re: [arch-general] Editing grub for dual boot?
To boot FreeBSD I needed to add a chainloader to the Linux's grub.cfg.
menuentry "FreeBSD"{ set root=(hd0,msdos1) chainloader +1 }
Note, at least FreeBSD needs to be on a primary or GPT partition.
You might have to mark the partition as active/bootable and you might have to hide other partitions.
It all depends on what the bsd is expecting to find in regards to partitions. I've never used it so I can't be of much help besides guesses.
I have another guess.
BSD uses partitions within partitions (it calls them "slices".) Check under the GRUB command line for anything funky like hd0,msdos1bsd1 or something.
On Sat, Apr 23, 2016 at 2:46 PM, Mauro Santos registo.mailling@gmail.com wrote:
On 23-04-2016 22:41, bill . wrote:
Hi all,
BSD is on a primary so that's not the issue.
When i added this to grub.cfg it puts the bsd option in my grub at
bootup, but when i select it i get the error "invalid signature." I tried replacing msdos1 with msdos3 since my bsd is on the third primary partition, but same result. I have checked the syntax several times. Does this error have to do with my placement within the file (near the end before memtest) or another error? Many thanks!
peace -bill
Date: Tue, 19 Apr 2016 01:04:36 +0200 From: silver.bullet@zoho.com To: arch-general@archlinux.org Subject: Re: [arch-general] Editing grub for dual boot?
To boot FreeBSD I needed to add a chainloader to the Linux's grub.cfg.
menuentry "FreeBSD"{ set root=(hd0,msdos1) chainloader +1 }
Note, at least FreeBSD needs to be on a primary or GPT partition.
You might have to mark the partition as active/bootable and you might have to hide other partitions.
It all depends on what the bsd is expecting to find in regards to partitions. I've never used it so I can't be of much help besides guesses.
-- Mauro Santos
participants (7)
-
bill
-
bill .
-
Ed Hamilton
-
Lukas Rose
-
Mauro Santos
-
Ralf Mardorf
-
William Castro