### System Details

```markdown
**CPU:** AMD Ryzen 9 5950X 16-Core Processor
**GPU:** NVIDIA GeForce RTX 4060 (UUID: GPU-0731fac6-59fb-e00c-7106-e3fe22586568)
**Kernel Version:** 6.17.7-arch1-2 (Identified during the limine-update run)
**Limine Package Versions:**
* local/limine 10.3.0-1
* local/limine-mkinitcpio-hook 1.26.0-1
* local/limine-snapper-sync 1.17.1-1
**Installation Method:** Custom LUKS/Btrfs on NVMe (/dev/nvme0n1), UEFI Boot, **initially MBR partitioned**.
```

-----

### What's wrong?

When running a system update (`pacman -Syu`), the Limine update hook fails, preventing the installation of new kernel and bootloader files. This issue appears to affect systems where the boot drive is using a legacy **Master Boot Record (MBR)** partition table instead of the modern **GUID Partition Table (GPT)**.

#### Error Message:

The update fails with the following error:

```
Error: Invalid GPT UUID length (11): '7153ccf9-01' for '/boot'
```

#### Steps to Recreate:

1.  Start with an Omarchy install on a drive partitioned with **MBR**.
2.  Attempt a system update or manually run `limine-update`.
3.  The script fails as it attempts to process the short MBR identifier as a full GPT UUID.

#### Root Cause (What was found and fixed):

The issue is that the Limine script expects a full **36-character GPT UUID**. The disk was MBR, which uses a short **8-character Disk Signature** (e.g., `7153ccf9`). The script incorrectly combines this short signature with the partition number (`-01`), resulting in the invalid 11-character string that triggers the length validation error.

#### Fix Applied (Manual Steps for Maintainer Reference):

The issue was resolved permanently by switching the disk's partition table from MBR to GPT in a live environment.

1.  Used `gdisk` to convert the disk's partition table from MBR to GPT:
    ```bash
    sudo gdisk /dev/nvme0n1
    # Confirmed 'w' to write the new GPT to disk
    ```
2.  The drive was assigned a new, correct 36-character **GPT PARTUUID** (e.g., `a96dc9b2-afae-4add-a412-1403bbec4a02`).
3.  Edited `/etc/default/limine` inside a chroot to update the `cryptdevice` parameter with the new, correct PARTUUID.
4.  Successfully ran `limine-update` after the conversion.

-----

### Suggested Action for Omarchy Project:

  * **Check for MBR:** Add a pre-check to the Limine installation/update hook that detects MBR partition tables and either automatically handles the conversion or throws an explicit error recommending conversion to GPT for UEFI booting.
  * **Ensure GPT Default:** Review the Omarchy installer/setup scripts to ensure a proper **GPT partition table** is created by default for all modern UEFI installations.