Gentoo Archives: gentoo-user

From: Michael <confabulate@××××××××.com>
To: gentoo-user@l.g.o
Subject: Re: [gentoo-user] Dual booting with Windows 10
Date: Fri, 21 May 2021 19:06:46
Message-Id: 1870789.yKVeVyVuyW@lenovo.localdomain
In Reply to: [gentoo-user] Dual booting with Windows 10 by peter@prh.myzen.co.uk
1 On Friday, 21 May 2021 15:42:01 BST peter@××××××××××××.uk wrote:
2 > Hello list,
3 >
4 > Mynew machine has Win-10 installedon /dev/nvme0n1 with the ESP as partition
5 > 1. I want to install Gentoo on /dev/nvme1n1. So far I haven't found a way
6 > to set up a working boot arrangement. I've tried mounting the ESP on /efi,
7 > on /EFI and on /boot/EFI. Efibootmgr seems to write a boot entry in some of
8 > those cases, and it's still there after a reboot - but it isn't visible to
9 > the BIOS.
10 >
11 > Can anyone offer some enlightenment, please?
12
13 If your ESP is on /dev/nvme0n1 and you are using vmlinuz symlinks, you can use
14 /boot/EFI as the mountpoint for the ESP VFAT partition. Your kernels/config/
15 System.map/initrd.img files will go into /boot, which will be on the same fs
16 as / on /dev/nvme1, using a fs which supports symlinks.
17
18 The efibootmgr '--loader' option should/could be used to specify the path to
19 your bootloader image, or if you are not using a bootloader image to chainload
20 your kernel with, point it directly to the path of your kernel; e.g.
21
22 efibootmgr --create --disk /dev/nvme0n1 --part 1 --label "gentoo-5.10.27" \
23 --loader "\EFI\gentoo\gentoo-5.10.27.efi"
24
25 The BIOS/UEFI menu should be able to list entries of bootable *.efi images, as
26 long as they are within the subdirectory of /boot/EFI on the ESP, but if you
27 are using a bootloader, then it is the bootloader image which will run and
28 chainload your OSs and their kernels.

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Subject Author
Re: [gentoo-user] Dual booting with Windows 10 Peter Humphrey <peter@××××××××××××.uk>