51 lines
1.8 KiB
Nix
51 lines
1.8 KiB
Nix
{ ... }:
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# Declarative OS-disk layout (disko). UEFI: GPT with an ESP + btrfs root.
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# disko both PARTITIONS/FORMATS this disk and generates the NixOS
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# `fileSystems.*` entries, so hardware-configuration.nix must NOT define
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# fileSystems for "/" or "/boot".
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#
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# ⚠️ Root is btrfs (was ext4): the disk previously held a CachyOS btrfs root,
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# and disko's `mkfs` create step SKIPS formatting when `blkid` still
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# detects a filesystem signature on the freshly-cut partition. A stale
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# btrfs superblock survives `wipefs`+repartition inside the new root
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# partition's range, so an ext4 root got skipped and `mount -t ext4`
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# then failed on the leftover btrfs bytes ("bad superblock"). btrfs's
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# create runs `mkfs.btrfs -f`, which reformats past any stale signature.
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#
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# ⚠️ This disk is WIPED on install. This is the Kingston SA400 SSD that
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# currently holds CachyOS (btrfs root+subvols on sdb2, ESP on sdb1).
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# The dev-data disks (sdc ext4 /mnt/hdd_01, LVM vg_ssd /mnt/ssd_01) and the
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# leftover ntfs disks (sda, sdf, nvme0n1) are NOT listed here — they are
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# mounted as plain fileSystems in configuration.nix (or, for the ntfs
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# disks, ignored entirely) so they are never touched.
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{
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disko.devices.disk.os = {
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type = "disk";
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device = "/dev/disk/by-id/ata-KINGSTON_SA400S37480G_50026B738072F6C6";
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content = {
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type = "gpt";
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partitions = {
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ESP = {
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size = "512M";
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type = "EF00";
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content = {
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type = "filesystem";
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format = "vfat";
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mountpoint = "/boot";
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mountOptions = [ "umask=0077" ];
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};
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};
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root = {
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size = "100%";
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content = {
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type = "btrfs";
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extraArgs = [ "-f" ];
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mountpoint = "/";
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};
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};
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};
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};
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};
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}
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