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📘IODD-2541

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Appearance

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Functions

  1. Bootable Virtual CD-ROM, DVD-ROM, Blu-ray Drive

    • There is no need to buy DVD-ROM and blank media for OS installation.

    • ISOarrow-up-right (CD, DVD, Blu-ray) is supported.

  2. Bootable Virtual USB Drive and Flash Drive.

  3. Multi LUN

    • max 1 optical drive, 1 hard drive, 4 virtual drives are supported at the same time.

  4. hotkey for safely removal.

    • The last physical safeguard. this key provides the safe removal.

  5. Write Protection

    • The last logical safeguard. I keep my drive. Good bye Virus.

    • Optional Write Blocker. (Hard wired)

  6. Real-time AES 256-bit XTS Military Grade Encryption ( iODD-2541 )

    • 4-15 Pin digits. 6 digits is enough for protecting your data. (against the developer of iODD-2541)

    • All functions work well with Encryption

    • Encryption is optional. you can use without encryption.

  7. Maintain Loading State

    • Save and maintain the loading state and menu for next boot.

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Menu

  1. Mode-Select - Define USB devices mode

    1. Dual Mode - 1 Disk Drive and 1 Optical Disk Drive

    2. HDD Mode - 1 Disk Drive.

    3. ODD Mode - 1 Optical Disk Drive.

  2. USB Control - USB Control

    1. Write Protect - Write-Protection for the Drive.

      • If virtual drive is mounted, this option applies to the virtual drive. (not to real disk drive)

    2. Refresh - Reconnect the iODD

    3. Safe Removal - stops the spindle motor and goes to power saving mode

    4. Umount VHDD - Unmounts All the Virtual Disk Drives

  3. Information - Information

    1. S.M.A.R.T. - informs the following status of the internal Disk Drive

      1. HDD Health - Disk Drive Health

      2. HDD Temp - Disk Drive Temperature

      3. HDD Model - Disk Drive Model

      4. HDD Serial - Disk Drive Serial

    2. Product Info - Product Info

      1. Firmware Ver - iODD's Firmeare Version

      2. USB Speed - Currently connected USB Speed

      3. USB Lowest Volt - USB BUS voltage. (lowest voltage)

      4. Current Voltage - USB BUS voltage. (current voltage)

  4. Setting - Settings

    1. LCD Bright - adjusts LCD back-light brightness

    2. Idle Bright - adjusts LCD back-light brightness in power saving mode

    3. Standby time - adjusts the inactive time before power saving mode is active

    4. Load Default - restores all settings to their default values

  5. Encryption - Encryption

    • Warning - The following actions will destroy HDD data permanently

    • But, Remove Encryption right after Set Encryption does not destroy HDD data

    1. Set Encryption - Set Encryption (,Input 4 - 15 digits PIN)

    2. Remove Encryption - removes Encryption

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Specifications

  1. External Interface - USB 1.1 / 2.0 / 3.0 (MAX 5G bps)

  2. Internal Interface - SATA I / II / III (Backward Compatible)

  3. 2.5 Inch HDD, SSD (9.5mm width) can be installed. 4TB+

    • If using IODD functions, Max 2TB partition can be used. Regardless of the disk size.

    • 7mm disk drive may requires a spacer.

  4. 12 touch keys, USB 3.0 micro B-Type connector.

    • touch problem is cleared. FAQ

  5. LCD - 128 * 32 dots.

  6. Material - Aluminum, PC (Plastic).

  7. almost same as ZM-VE400. same architecture. improved hardware. Firmware updates continuing.

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How to use

At first please refer to the below Manual.

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Basic function

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iODD's Sample Folder Tree

create a folder named "_ISO" at root folder. This folder tree is an example. Any file name and folder name under "_ISO" is acceptable

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2541 Keys

  1. Browsing

    • Up/Down list - 2 / 8

    • Select a file - 5 (or 6, for maintaining loading state)

  2. Menu

    • Menu - to enter to Menu. (or Exit).

    • 4 - Go to upper list

  3. Long key ( push for 3 seconds )

    • 1 - Go to Power Saving State

    • 3 - reboots iODD

    • 4 - refreshes file lists

    • 7 - Reboot. and detach all virtual drives (VHD, RMD, IMA)

    • 0 - Reboot. and temporarily disable Write-Protection

  4. There is not Startup key

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Go to Power Saving State

Power Saving State : Spindle motor is stopped and LCD brightness is low. CD loading state is saved.

  • Jog Dial. down for 3 seconds. (2531).

  • 1. push for 3 seconds. (2541).

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Selecting a file

In order to maintain loading state, you must save the state. refer to the above key operations.

  • (2531) 2531 Keys

    • If Firmware version is 1558 or higher, loading state is automatically saved.

    • If not, you must save it manually. (Go to Power Saving State)

  • (2541) 2541 Keys

    • If Firmware version is lower than 6(7)9-05, button 6 has no function.

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Safely Removal In OS

If iODD's partition is NTFS, then this function is mandatory when disconnecting iODD from host. NTFS does not write Immediately the data to HDD.

  • Please do Safely Removalarrow-up-right before disconnection.

  • If iODD is in write-protected mode and an error message appears, then disable write-protect option. and retry this function.

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Initialization

  • the firmware is two sorts. (NTFS type, FAT32/exFAT type)

  • NTFS firmware version is shipped.

  • If you use FAT32 or exFAT Partition, then run FAT Firmware Updater. (FAT32arrow-up-right exFATarrow-up-right Partitionarrow-up-right)

  • follow the next steps

    1. assemble the HDD or SSD with iODD

    2. connect the iODD to PC

    3. initialize the drive to MBR. (MBRarrow-up-right)

    4. Format the first partition as NTFS. (if the firmware is FAT, then format it as FAT32 or exFAT)

      • In FAT32 partition there is 4G byte file size limitation. please use that carefully.

    5. create "_ISO" folder in root folder. (not case sensitive)

    6. copy ISO file to "_ISO" folder. (or create VHD RMD IMA files)

    7. safely remove iODD. ( very Important if NTFS). (safely removearrow-up-right).

    8. If Power Saving mode is active, then disconnect and reconnect the USB cable.

    9. The following messages will appear sequentially in LCD

      • "iodd 253(4)1"

      • a file name

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Initialize All

If Initialization fails, follow the next steps

  1. disconnect the USB cable.

  2. remove the HDD from iODD. and Connect directly it to PC.

  3. Initialize it to GPT. (GPTarrow-up-right)

  4. redo Initialization (from the first step). (your HDD is initialized as MBR -> GPT -> MBR).

  5. Follow these steps to perform a forced firmware update:

    1. Open back cover

    2. Press tact switch

    3. Connect USB cable

    4. Wait 7 seconds

    5. Release tact switch

    6. Wait 1 minute

    7. All done

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First Aid

If it has failure suddenly, try one of the following steps until the error is clear

  1. (2531). press the Jog Dial and hold. and then connect iODD to PC. (2531 Keys. refer to Startup Keys)

  2. try Safely Removal In OS.

  3. Check Disk for iODD (for Windowsarrow-up-right)

  4. Rename "_ISO" folder name to other name. create new folder named "_ISO". and copy files to this folder. (not moving)

  5. Backup the data of iODD, and Initialize All

If there is hardware problem

  1. Reboot the PC

  2. Please change USB cable

  3. Connect iODD to the port of PC back panel.

  4. Try it on another pc

  5. Please change the HDD.

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Using a Virtual USB Optical Drive (DVD-ROM or Blu-ray ROM)

  1. copy ISO files to "_ISO" folder. (or to subfolder)

  2. Safely Removearrow-up-right. (Required for NTFS )

  3. If Power Saving mode is not active , then Go to Power Saving State

    • If "Plug Out ..." message appears, disconnect the iODD.

  4. Connect iODD to a PC. and power on the PC.

  5. (Optional) select iODD or USB CD-ROM as the first priority of BOOT order in BIOS.

  6. If a file has not been selected, then select an ISO file. Selecting a file

  7. If PC doesn't find boot device, then reboot the PC. (Ctrl-Alt-Del)

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Booting Error

  • Confirm whether the ISO file is bootable.

  • If your PC does not support multi LUN, please select CD-MODE (or ODD-MODE).

  • In order to confirm whether the ISO file is able to boot, please try to test it with the validated PC.

  • Although it is bootable ISO file, please confirm whether the result with a real USB DVD-ROM is the same

  • If the ISO file can be boot with USB DVD-ROM, then use USB Y-CABLE for adding external power.

  • If your laptop has own internal DVD-ROM, please disable internal DVD-ROM at BIOS settings. or remove it.

  • The older OS than motherboard may not have an appropriate driver to boot.

    • ex) It is impossible to install a genuine Windows 7 on Skylake platform using USB DVD-ROM device.

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Using a Virtual USB fixed disk drive (Virtual Hard Disk)

  • Fixed-size VHD file only is supported. (dynamic VHD and VHDx files are not supported)

  • Also fixed VMDKarrow-up-right file is supported.

  • Create VHD files directly to iODD by "VHD Tool++"arrow-up-right. ("VHD Tool++" can creates a file without fragment)

  • You can create VMDK by changing file extension. (VHD -> VMDK).

  • If you select a VHD file, then iODD will be rebooted with CD-MODE. and it will be recognized as a USB disk drive.(Selecting a file).

  • If you want to change to DUAL-MODE or to change Write Protection option, rename the VHD filename. refer to "VHD Tool++"arrow-up-right

  • Max 4 Virtual Drives are supported at the same time ( Successive selection within 3 seconds)

  1. create a VHD file using a tool. (VHD Tool++arrow-up-right).

  2. If successful, safely remove iODD from OS. (Safely Removal In OS. Very Important to NTFS.)

  3. If Power Saving mode is not active, then Go to Power Saving State

    • If "Plug Out ..." message appear, disconnect the iODD.

  4. Connect iODD to a PC. and power on the PC.

  5. (Optional) select iODD or USB Device as the first priority of BOOT order in BIOS.

  6. If a file has not been selected, then select a VHD file. (Selecting a file)

  7. If PC doesn't find boot device, then reboot the PC. (Ctrl-Alt-Del)

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Using a Virtual USB Removable Flash Drive (Virtual USB Flash Drive)

  • Almost the same as the above method. (Using a Virtual USB fixed disk drive)

  • But the file extension must be changed. "VHD" -> "RMD"

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Using a Virtual USB Floppy Drive (Virtual FDD)

  • This method is not supported on some computers.

  • Uncompressed floppy image IMA, IMG, BIF, VFD are supported.

  • IMG, BIF, VFD image file extension must be renamed to IMA.

  • Almost the same as the above method.

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Manual

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Messages

If LCD message shows like the followings

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Status Messages

  1. "Please Wait" - Operation in progress. Please wait.

  2. "Plug Out ..." - Please disconnect the device from the USB port.

  3. "Data Saving..." - Saving current configuration. Please wait until the process is complete.

  4. "Flash Update..." - Updating internal flash memory (Firmware/Font). Do not disconnect the cable.

  5. "Input Limit..." - Maximum PIN retry limit exceeded. Please reconnect the device to try again.

  6. "Replug USB..." - Connection error detected. Please disconnect and reconnect the USB cable.

  7. "Not Match..." - The entered PIN does not match.

  8. "NO DEVICE !!!" - Internal drive (HDD/SSD) not detected. Check the physical connection.

  9. "HDD ERROR !!!" - Critical drive read error or hardware failure detected.

  10. "HDD WARNING ???" - Drive health warning. Bad sectors have been detected on the internal drive.

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Error Messages

chevron-right"Check HDD" - Drive check required.hashtag

A drive error has been detected. Please refer to the First Aid section for troubleshooting steps.

chevron-right"1st partition" or "unsupported partition" - Partition mismatch with firmware.hashtag

This error occurs when the firmware version (NTFS/FAT32/exFAT) does not match the file system of the first partition. Please refer to the Initialization section to align the partition and firmware types.

chevron-right"bad or N/S HDD" - Unsupported or faulty drive.hashtag

The device cannot read the internal drive. Possible causes: Hardware failure of the HDD/SSD or a faulty USB cable. Try replacing the cable or the internal drive.

chevron-right"Too Many Files" - File limit exceeded.hashtag

The IODD supports a maximum of 32 files or subfolders within a single folder (including the "_ISO" folder). Please organize your data by splitting files into multiple subfolders.

chevron-right"NO _ISO Folder" - The "_ISO" folder is missing.hashtag

The required directory named "_ISO" was not found. Please create a folder named "_ISO" in the root directory.

chevron-right"NO - DISC" - No supported files found.hashtag

No compatible files or subfolders were detected inside the "_ISO" folder.

chevron-right"Disc Locked" - Drive is currently locked.hashtag

The operating system or a running application has locked the virtual drive. Close any programs accessing the drive or safely reconnect the device.

chevron-right"DEFRAG" - File fragmentation detected.hashtag

ISO files support a maximum of 24 fragments. VHD and RMD files must have zero fragmentation (contiguous). To resolve this, perform a Disk Defragmentationarrow-up-right using Windows or specialized tools.

chevron-right"vDISK Limit" - Virtual drive limit reached.hashtag

The maximum number of concurrently mounted virtual drives is 4. To mount a new drive, please unmount one of the currently active virtual drives.

chevron-right"Already Hit" - File already selected.hashtag

The selected file is already mounted as a virtual drive.

chevron-right"No Use Dynamic" - Dynamic VHD not supported.hashtag

The selected file is a Dynamic VHD. Only Fixed-size VHD files are supported.

chevron-right"No Use Sparse" - Sparse files not supported.hashtag

Sparse image files cannot be used as virtual drives.

chevron-right"Enc Ver Err ???" - Encryption version mismatch.hashtag

This error occurs when the encryption version on the HDD/SSD is incompatible with the current firmware version. (e.g., The drive was encrypted with version 6.x firmware, but the device is currently running version 7.x firmware). Please ensure that the firmware version matches the encryption structure of the drive.

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FAQ

chevron-rightQ: The IODD device does not boot from the PC.hashtag

Please refer to the Booting Error section for troubleshooting steps.

chevron-rightQ: The touch sensitivity of the buttons is poor.hashtag

This issue has been resolved in current hardware revisions. For older units: Placing a thin piece of paper or plastic film between the internal drive (HDD/SSD) and the device enclosure may improve sensitivity. (Do not cover the entire drive; ensure proper fit).

chevron-rightQ: I forgot my password. Can I reset it? (I don't mind if the data is lost).hashtag

Yes. However, resetting the password will permanently erase all data on the drive. Please refer to the Initialize All section to perform a full reset.

chevron-rightQ: I forgot my password. Can I recover the PIN or restore my data?hashtag

No. Due to the high-level AES-256 hardware encryption, password recovery or data restoration is absolutely impossible, even for the developer or manufacturer.

chevron-rightQ: The LCD only displays "IODD 2541" and does not progress.hashtag

This indicates a firmware-related hang. Please update to the latest firmware version.

chevron-rightQ: When I mount a virtual drive (VHD, RMD, IMA), the mode changes to CD-MODE automatically. If I switch to DUAL-MODE, the disk becomes write-protected.hashtag

This behavior is determined by the virtual drive's properties. You can modify these settings by changing the file name or using specialized tools. Please refer to the VHD Tool++ section for details.

chevron-rightQ: How can I unmount currently loaded virtual drives (VHD, RMD, IMA)?hashtag

You can use one of the following methods:

  1. Press and hold the 7 button for 3 seconds (Available in Firmware version 69+ or 79+).

  2. Navigate to Menu -> Advanced -> Unmount VHDD.

chevron-rightQ: The firmware update fails repeatedly.hashtag

Ensure you are using a stable USB port and the correct model firmware. Please refer to the How to update section for step-by-step instructions.

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Firmware

  1. There are 2 sorts of iODD's Firmware.

  2. FAT version - supports Fat32 and exFAT partition.

  3. NTFS version - supports NTFS partition.

  4. There are 2 types of encryption version. one is 6x . the other is 7x.

    • 7x is more secure than 6x against brute force hacking.

    • 6x and 7x are not compatible to each other.

      • If your iODD is encrypted, then before updating iODD to other firmware, you must backup your data.

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How to update

Requirements : PC ( Windows OS, USB Port) Warning - You must connect only one iODD device. Please update the exact firmware matching the first partition of iODD. If you update wrong firmware, retry the updater with correct firmware.

  1. Download the below firmware file.

  2. Uncompress the zip file to proper folder.(Do not run it within zip file)

  3. Run the EXE file.

  4. If "Device is Detected" message appears, then press "Update" button.

    • If not, follow the next steps

    • Use another PC.

    • Change the USB cable.

    • (for 2541.) Press the Reset button and hold, and connect the iODD. and hold the button for 1 second. and run the firmware updater.(this reset button is on the main PCB inside iODD.)

    • (for 2531.) Press the Reset button and hold, and connect the iODD. and hold the button until USB detection (for about 5 seconds). and run the firmware updater.(this reset button is on the main PCB inside iODD.)

  5. If it is successful, then press "Exit" button. and reconnect iODD.

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