Partitions are a dict now. How does disko know this block blongs on the beginning of a partition?

            boot = {
              size = "1M";
              type = "EF02"; # for grub MBR
            };

I guess I can use start and stop, but alle the examples use size.

Hmm start and end does not work as well. I'm asking because I get :

+ sgdisk --align-end --new=2:0:1M --change-name=2:disk-sda-boot --typecode=2:EF02 /dev/sda
Could not create partition 2 from 1026048 to 2048

I want this partition to be the first, not the second.

In reply to @palo:xaos.space

Partitions are a dict now. How does disko know this block blongs on the beginning of a partition?

            boot = {
              size = "1M";
              type = "EF02"; # for grub MBR
            };

I guess I can use start and stop, but alle the examples use size.

Hmm that’s for subvolumes, not clear how you’d use that for multiple disks.

I’d rather use bcachefs but that’s not implemented yet :) I’m trying to decide whether I need to implement bcachefs multi-disk myself

Looking at the source of this module, I can make that happen by configuring device1 and adding "-m dup -d dup /dev/device2" as extra mkfs options.

I'm about to press the big red button, so will also ask here:

Quick sanity check!
I have sda and nvme in my machine, sda was created with disko
I backed up everything to sda
Now I want to do nixos-anywhere with disko this machine
Will I get my sda wiped, and how to not get my sda wiped?

the one above is solved
i have a new one
trying to run nixos-install and get:

error:
       … while calling the 'head' builtin

         at /mnt/nix/store/gzf4zwcakda1nykn6h0avh45xhjhvsz4-source/lib/attrsets.nix:960:11:

          959|         || pred here (elemAt values 1) (head values) then
          960|           head values
             |           ^
          961|         else

       … while evaluating the attribute 'value'

         at /mnt/nix/store/gzf4zwcakda1nykn6h0avh45xhjhvsz4-source/lib/modules.nix:809:9:

          808|     in warnDeprecation opt //
          809|       { value = builtins.addErrorContext "while evaluating the option `${showOption loc}':" value;
             |         ^
          810|         inherit (res.defsFinal') highestPrio;

       (stack trace truncated; use '--show-trace' to show the full trace)

       error: The option `fileSystems."/".device' has conflicting definition values:
       - In `/mnt/nix/store/d1g5graq05ksrkr0w4ym6wbg6xgdkps8-source/flake.nix': "/dev/mapper/nvme-crypt"
       - In `/mnt/nix/store/d1g5graq05ksrkr0w4ym6wbg6xgdkps8-source/hosts/immortal/hardware-configuration.nix': "/dev/disk/by-uuid/d5897059-dab4-4e73-8904-ec78689db058"
       Use `lib.mkForce value` or `lib.mkDefault value` to change the priority on any of these definitions.

as i understand /dev/mapper/nvme-crypt comes from disko
and /dev/disk/by-uuid/d5897059-dab4-4e73-8904-ec78689db058 nixos generated