How to auto mount disk at boot (NixOS)

Help
1

I have two ssd in my pc and i used the second one to store my steam games. I tried to make it automount by mounting it then using the command “nixos-generate-config” but when i restarted it didnt fixed it. I looked at hardware config but the disk isnt mentoined there.

I tried to declare it like this in the nix config but this didnt worked.

fileSystems.“/run/media/heim/Games” = {
device = “/dev/sdb1”;
fsType = “ext4”;
options = [“uid=1000,gid=100,forceuid,forcegid,x-systemd.automount,x-systemd.mount-timeout=5s”];
};

How i could mount it at boot to “/run/media/heim/Games”?

2

maybe post your entire hardware-config for all other disks so that we can take a look at it?

this didnt worked

in which way did it not work? Not mounted at all? Did you try mounting the disk by uuid?

3

1.Will post my hardware config tomorrow.
2. It just not mounted at all. I can still find it in dolphin file manager, thats fine, but its not mounted

4

x-systemd.automount will only mount the disk when you access the mount point. If you remove that, it should mount on boot.

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5

Hardware config

Do not modify this file! It was generated by ‘nixos-generate-config’

{ config, lib, pkgs, modulesPath, … }:
{
imports =
[ (modulesPath + “/installer/scan/not-detected.nix”)
];
boot.initrd.availableKernelModules = [ “nvme” “xhci_pci” “ahci” “usbhid” “usb_storage” “sd_mod” ];
boot.initrd.kernelModules = ;
boot.kernelModules = [ “kvm-amd” ];
boot.extraModulePackages = ;
fileSystems.“/” =
{ device = “/dev/disk/by-uuid/ca4a3de8-0a6f-45da-90f7-e109c3a2341e”;
fsType = “ext4”;
};
fileSystems.“/boot” =
{ device = “/dev/disk/by-uuid/4F1B-0C46”;
fsType = “vfat”;
};
fileSystems.“/run/media/heim/Games” =
{ device = “/dev/disk/by-uuid/81ada518-5bf6-4f03-89aa-d262170fae25”;
fsType = “ext4”;
};
#its my pendrive
swapDevices =
[ { device = “/dev/disk/by-uuid/e7c10971-cebb-4a52-a42a-a722f05a4995”; }
];

networking.useDHCP = lib.mkDefault true;

nixpkgs.hostPlatform = lib.mkDefault “x86_64-linux”;
hardware.cpu.amd.updateMicrocode = lib.mkDefault config.hardware.enableRedistributableFirmware;
}

6

I am a bit at odds with your copy-paste of your config files. They don’t seem to preserve the correct formatting. And some boolean values have been replaced by different characters. Not really bad for reading, but I can’t you take them, edit and copy-paste back.

So you’ll have to do that yourself.

I’d just add the filesystem that you have to your hardware-config.nix and implement the two changes already proposed:

  1. Define the device to mount by uuid instead of /dev/sdb1 just like the other filesystems. You can check the uuid you need in /dev/disk/by-uuid/.

  2. Remove the systemd automount stuff.

The report back if it works.

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7

It worked thanks. Added the code to nixos config then nixos-rebuild switch and it instantly mounted.
Thank you.

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