# Lena Setup Specifics

**Machine:** Lenovo Ideapad 5 2-in-1 (Ryzen 7 8845HS)

## 1. Disk Partitioning (Btrfs)
Lena uses a Btrfs subvolume layout with ZSTD compression. Use these steps in the installer:

### Step 1: Subvolume Creation
```bash
# Mount the main partition (nvme0n1p3)
mount /dev/nvme0n1p3 /mnt

# Create subvolumes
btrfs subvolume create /mnt/@
btrfs subvolume create /mnt/@home
btrfs subvolume create /mnt/@nix
btrfs subvolume create /mnt/@log

umount /mnt
```

### Step 2: Mount with Optimizations
```bash
# Mount Root
mount -o subvol=@,compress=zstd,noatime /dev/nvme0n1p3 /mnt

# Create mount points
mkdir -p /mnt/{home,nix,var/log,boot}

# Mount others
mount -o subvol=@home,compress=zstd,noatime /dev/nvme0n1p3 /mnt/home
mount -o subvol=@nix,compress=zstd,noatime /dev/nvme0n1p3 /mnt/nix
mount -o subvol=@log,compress=zstd,noatime /dev/nvme0n1p3 /mnt/var/log

# Mount EFI (nvme0n1p1)
mount /dev/nvme0n1p1 /mnt/boot
```

## 2. 2-in-1 / Tablet Features
*   **Auto-Rotation:** Enabled via `hardware.sensor.iio`. KDE Plasma 6 should handle rotation automatically.
*   **Fingerprint:** Enabled for `sudo` and lock screen.
    *   **Enrollment:** `fprintd-enroll nimmo`
*   **Numlock:** Forced 'On' at boot via SDDM.

## 3. Post-Install Check
If the screen rotation is inverted, verify orientation settings in Plasma Display Configuration.