ST400/LK100 Password Reset SA

Password reset and data initialization guide for ST400, LK100, and MINI PRO models.

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

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.

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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.

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

Supported Models: ST400 / LK100

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" or "No Supported Partition", the encryption has been successfully wiped.

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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)

# 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

Post-Reset Setup After the wipe, the device is in a factory-new state. You must set a new password and perform Drive Initialization before use.

Safe Removal To prevent filesystem corruption (ASSERT errors) in the future, always use the OS Safely Remove Hardware function.

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