# ST400/LK100/MINI PRO Password Reset

These models share the same keypad interface and menu structure. If you have forgotten your password, use one of the three methods below.

{% hint style="warning" %}
**Total Data Erasure** All methods listed below will **permanently delete all data** on the drive. Recovery is impossible. Proceed only if you have a backup or do not need the existing data.
{% endhint %}

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### Method 1: Using IODD Admin Manager (Recommended)

This is the simplest method and does not require disassembling the device or manual keypad cycles.

1. Connect your IODD to a Windows PC.
2. Launch the **IODD Admin Manager** application.
3. Navigate to the **Emergency** tab.
4. Follow the prompts to complete the **Confirmation Procedure** (Click counting).
5. Execute **Erase All Data**.
   * This will wipe the password, encryption keys, and all stored data, returning the device to its factory state.

***

### Method 2: Keypad Sequence (The "1 to 0" Cycle)

*Supported Models: ST400 / LK100 / MINI PRO*

If you don't have access to a PC with Admin Manager, you can force a hardware reset via the keypad.

1. Power on the device to the **Password Input Screen**.
2. Enter the sequence: `1` → `2` → `3` → `4` → `5` → `6` → `7` → `8` → `9` → `0`.
3. **Repeat this entire 10-digit cycle 15 times.**
4. If you make a single mistake during the 15 cycles, you must restart from the very beginning.
5. **Success**: When the screen displays **`"1st Partition"`** (1st Partition) or **`"No Supported Partition"`** (No Supported Partition), the encryption has been successfully wiped.

***

### Method 3: Physical Wipe (Requires Disassembly)

This method bypasses the keypad cycles by connecting the internal drive directly to a PC.

1. **Disassemble**: Open the case and remove the internal HDD/SSD.
2. **Connect**: Plug the drive into a PC via a SATA-to-USB adapter or internal SATA port.
3. **The "GPT-First" Principle**:
   * Encryption metadata is stored in the GPT area. You must initialize the disk as **GPT** first to clear the lock.
   * After the GPT wipe, you can re-initialize it to your preferred style (MBR or GPT).
4. **Format**: Create at least one partition and format it as **NTFS** or **exFAT**.

#### **Terminal Command (Windows Diskpart)**

```bash
# Run Command Prompt as Administrator
$ diskpart
$ list disk
$ select disk N  # Check the size to select the correct IODD disk!
$ clean

# Force wipe encryption by converting to GPT
$ convert gpt

# Optional: Re-convert to MBR if needed
$ convert mbr

$ create partition primary
$ format fs=ntfs quick  # or fs=exfat quick
$ exit
```

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### 📝 Summary of Methods

| Feature          | 1. Admin Manager | 2. Keypad Cycle     | 3. Physical Wipe     |
| ---------------- | ---------------- | ------------------- | -------------------- |
| **Tools Needed** | PC + Software    | None                | Tools + SATA Adapter |
| **Effort**       | Very Low         | High (150+ presses) | Medium (Disassembly) |
| **Best For**     | Most Users       | No PC Access        | Advanced Users       |

{% hint style="warning" %}
**Post-Reset Setup** After the wipe, the device is in a factory-new state. You must set a new password and perform [Drive Initialization](https://help.iodd.kr/disk-initialization) before use.
{% endhint %}

{% hint style="danger" %}
**Safe Removal** To prevent filesystem corruption (ASSERT errors) in the future, always use the OS **Safely Remove Hardware** function.
{% endhint %}

***