Arch Linux

funkaddict

Member

Registered: 2018-08-13

Posts: 106

[SOLVED] Configuration / mounting efi partition in Dualboot

Hey there,

I am currently setting up a dual boot on my new laptop.

• Machine is a XMG Fusion 15 Laptop with a single 1TB Samsung M.2 SSD

• Windows 10 was previously installed by myself

When booting from the usb drive with arch, fdisk -l shows:

• /dev/nvme0n1p1 - 529M - Windows Recovery Environment

• ]/dev/nvme0n1p2 - 100M - EFI System

• /dev/nvme0n1p3 - 16M - Microsoft Reserved

• /dev/nvme0n1p4 - 419.3G - Microsoft basic data

• /dev/nvme0n1p5 - 108G - Microsoft Basic data

• /dev/nvme0n1p6 - 404G - Microsoft basic data

Questions:

1. So I am formatting and encrypting nvme0n1p6 with luks and ext4 as this shall be my / directory for Arch. However, I am struggling when trying to mount nvme0n1p2. The wiki suggests for dual boot, not to creat an additional partition for efi but to mount the existing efi partition created by windows. But when trying to mount:

mount /dev/nvme0n1p2 /mnt/efi

it says, the mount point does not exist. Am I right that I have to create it first in the live system?

2. The Efi Partition created by windows is only 100m in size. The wiki however suggests the efi partition to be 512m in size. What about it? Should the size be changed, or will it work with 100m?

Many thanks.

Last edited by funkaddict (2019-12-27 15:48:28)

funkaddict

Member

Registered: 2018-08-13

Posts: 106

Re: [SOLVED] Configuration / mounting efi partition in Dualboot

Questions are solved, after once more reading the respective wiki pages carefully

1. Of course the existing efi partition has to be mounted, but at /mnt/efi and of course it has to be created first.

2. From my understanding, it is okay if the efi partition is only 100m in size, as it is created by win 10 and only mounted by arch/bootloader.

TristanDee

Member

From: Dhaka, Bangladesh

Registered: 2019-11-25

Posts: 7

Re: [SOLVED] Configuration / mounting efi partition in Dualboot

I just booted into the live installation and then noticed the same thing - the very small size of the EFI partition and was confused about what to do.

Now your findings make it clear.

Thanks! I will now start installing Arch!

---

...Our lives are mostly a constant evasion of ourselves.
- TS Eliot

funkaddict

Member

Registered: 2018-08-13

Posts: 106

Re: [SOLVED] Configuration / mounting efi partition in Dualboot

I am happy, that my mistakes/misassumptions helped you. However, I was wrong with 2. systemd-boot would also create a subdirectory in the efi partion (e.g. /boot or /efi), however, it is small in size, why it is no problem that the entire partition is only 100m.