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kovm
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PostPosted: Tue Jan 28, 2014 1:03 pm    Post subject: Windows 8.1 and Gentoo multiple disk install Reply with quote

Hi Guys,

[noob question]

I've been reading multiple forum posts about gentoo dual boot + windows 8.1 problems regarding EUFI, but could not really find an answer to my problem.

I currently have Windows8.1 installed on a disk with UEFI boot enabled and gpt partitioned. But i want to install gentoo on a second disk.

My question is: Do I treat this the same as a single disk dualboot environment? Or is there an easier way to install the OS + bootloader?

Is it possible to just connect 1 disk at a time for booting the other os? Even though keeping both disks connected would be optimal.


Last edited by kovm on Thu Jan 30, 2014 10:42 am; edited 2 times in total
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cwr
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PostPosted: Tue Jan 28, 2014 1:29 pm    Post subject: Reply with quote

When booting on machines (like laptops) with tricky windows installations I tend
to use EasyBCD to install second entry for the Windows boot menu which boots
a grub boot partition. I make the grub menu entry the default, so it's another 5-10
seconds delay on booting, but it saves a lot of pain messing with Windows.

Once grub is up you can boot anything from anywhere.

Will
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kovm
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PostPosted: Tue Jan 28, 2014 2:25 pm    Post subject: Reply with quote

cwr wrote:
When booting on machines (like laptops) with tricky windows installations I tend
to use EasyBCD to install second entry for the Windows boot menu which boots
a grub boot partition. I make the grub menu entry the default, so it's another 5-10
seconds delay on booting, but it saves a lot of pain messing with Windows.

Once grub is up you can boot anything from anywhere.

Will



I will install Gentoo on my second disk, set up grub2 and then boot into windows and use easyBCD to add the boot entry tonight, thanks! :D
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DONAHUE
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PostPosted: Tue Jan 28, 2014 7:57 pm    Post subject: Reply with quote

windows8.1 UEFI and easybcd and grub2 do not play well together

http://wiki.gentoo.org/wiki/UEFI_Dual_boot_with_Windows_7/8 with the minor modification of gentoo on a second disk works well. rEFInd is a superb bootmanager.
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kovm
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PostPosted: Wed Jan 29, 2014 8:43 am    Post subject: Reply with quote

DONAHUE wrote:
windows8.1 UEFI and easybcd and grub2 do not play well together

http://wiki.gentoo.org/wiki/UEFI_Dual_boot_with_Windows_7/8 with the minor modification of gentoo on a second disk works well. rEFInd is a superb bootmanager.



what minor modification are you talking about?
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cwr
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PostPosted: Wed Jan 29, 2014 11:17 am    Post subject: Reply with quote

Sorry, I thought they'd fixed the EasyBCD / UEFI problems. Thanks for the
heads-up on rEFInd.

Will
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DONAHUE
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PostPosted: Wed Jan 29, 2014 3:40 pm    Post subject: Reply with quote

minor modification:
no need to shrink partitions on sda and make gentoo partitions there
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kovm
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PostPosted: Thu Jan 30, 2014 10:40 am    Post subject: Reply with quote

DONAHUE wrote:
minor modification:
no need to shrink partitions on sda and make gentoo partitions there



I see this in the wiki post as well, but why is this necessary? If im going to install gentoo on a different disk. I want my full gentoo install on my second disk.
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DONAHUE
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PostPosted: Thu Jan 30, 2014 4:15 pm    Post subject: Reply with quote

put refind on the ESP (EFI system partition) that windows created as described in the wiki, put gentoo on the second disk. Refind will find the gentoo efi stub kernel and windows
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