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Mobile 2.5-inch Dual Drives (SSD + HDD)

WD Black²

The power of two

WD has redefined the PC with the next big thing in ultra-fast performance storage. Introducing WD Black², the world's first 2.5-inch dual drive storage solution. The WD Black² dual drive is a completely new approach in a compromised solid-state and hybrid storage market. Finally you can have the speed of an SSD that you want and the capacity of a hard drive that you need in your notebook or all-in-one PC.

Inspired by you

Your requests to make the notebook and all-in-one PC experience better, faster and more dynamic have been heard. We took the challenge and made it our mission to design a storage solution that delivers the ultimate experience. The WD Black² dual drive solves your storage limitations and adds true high-performance SSD speed to your PC. The WD Black² dual drive is the drive you were waiting for, inspired by and created specifically for enthusiasts like you.

Professional performance

WD Black² is built by fusing two world-class storage devices together into one dual drive to create the ultimate experience for notebooks and all-in-one PCs. Boot up faster to your operating system with the speed of SSD at your fingertips. WD Black² features innovative 20nm NAND flash with remarkable power efficiency that is poised to redefine what is possible in the storage industry.


WD Black²  Shift_Technology is race-ready from the starting line with enhanced firmware and improved algorithms for faster performance and data management. Features include:

  • 20nm architecture with quad channel NAND processing for increased speed and performance
  • WD customized controller built for increased efficiency of data management per cell resulting in less drag on your PC
  • Improved drive integrity with 8 GB of space for provisioning to help protect and improve SSD reliability

WD Black²  Shift_Technology allows you to migrate larger data files to the hard drive and provides your SSD with less system drag, which increases the overall endurance and mileage of the SSD. With less caching involved, there's less time waiting and more time enjoying the things you love to do most.

Reduce SSD wear and tear

SSD performance can degrade when total capacities are reached or after a finite number of writes have been reached, which is a major concern for SSD users. We built our dual drive solution to curb these problems. With our WD Black², you can move your larger data or write-intensive applications onto the 1 TB hard drive, ultimately extending the life of the SSD and maintaining optimal performance across the dual drive.

For the creative pro

Now you can load your OS, photo and video editing programs on the SSD and save all of your capacity-heavy RAW photo and video files to the 1 TB HDD. Keep it all local and readily available on your notebook or all-in-one PC without slowing system performance.

For the gamer inside you

Turn your dual-purpose notebook or all-in-one PC into the high-performance gaming machine of your dreams. The dual drive's fully accessible SSD allows you to place your OS and favorite game software directly on the SSD which results in faster boot times and smoother game play while still having separate storage capacity available for your work and personal files.

You take the control

With WD Black² the decision is yours. Safer than using an SSD as your only primary storage device, now you are enabled to save your data on the
1 TB hard drive, or split data between both. Take full control and manage the location of your personal data. We recommend viewing the installation videos to understand the best option for your upgrade, whether it be clean installation, cloning or data migration.

Industry-leading 5-year limited warranty

Relentlessly dedicated to your data, the WD Black² dual drive carries the same industry-leading 5-year limited warranty as WD's other performance storage drives.

Finessing perfection

WD Black² combines the shock and vibration resistance of SSD with the proven technology of the HDD for one truly agile and highly reliable dual drive storage solution. Advanced firmware and intelligent algorithms assist in heightened performance, resulting in cooler temperatures with nearly inaudible operation.

Software Download Required

WD Black² Dual Drive ships as a full kit with a web key, quick install guide, USB to SATA transfer cable, and warranty information. Software download and internet connection are required for installation. Please watch our how to install videos at http://products.wd.com/wdblack2 and choose whether you would like to perform a fresh installation or a cloning installation for your dual drive.


Our revolutionary WD Black² dual drive is designed for use in most 9.5 mm 2.5-inch drive bays.

Ideal for:

Upgrades of notebooks and all-in-one computers by advanced users and system integrators. Users of video and photo editing, graphic design, games and other power computing applications will benefit the most.

Recommended use:

WD Black² dual drives are tested and recommended for use in notebooks, all-in-one PCs, thin client PCs, gaming PCs and other small form factor PC systems.*

*WD dual drives are designed and tested for use in specific applications and environments. This ensures that your dual drive is compatible with and functions properly in your application. Our dual drives are warranted against defects in materials and workmanship in the system for which they were designed. Use in systems other than for what the dual drive was designed could result in compatibility problems that affect proper function, unrelated to material and/or workmanship defects. For best results, be sure to select the appropriate product for your application by consulting our product spec sheets on our website at www.wd.com or by calling our customer support line where we would be happy to help you through the selection process.

How to install the WD Black² Dual Drive

Migrating data from a large drive to a smaller drive, despite the type of technology, can be a bit of a challenge. We have put together several videos to show you how to properly install the WD Black² Dual Drive so that you may choose the option that best fits your application. We recommend performing a “fresh” or new operating system installation on the WD Black² Dual Drive, allowing you to properly transfer your data between the solid state drive and larger hard drive.

In order to provide the best experience possible, please download our WD Partitioning Software and Data Transfer Software before you begin
your installation.

WD Black² – Self Installation Photo Guide

Looking for a step-by-step visual guide for your installation?
Click here to view the WD Black² Installation Photo Guide eBook.

General Questions:

  • Where can I download the Quick Install Guide?
    • The installation instructions can be found in the Quick Install Guide that came with the product or you can find it here.

  • Where can I download the complete Installation Manual?
    • The Installation Manual can be found here.

  • Where can I find videos on installation?
    • Videos on installation can be found here.

  • What makes the WD Black² Dual Drive?
    • WD Black² Dual Drive has a fully accessible SSD and hard drive but it only requires one SATA connection.

  • What form factor and size does this product come in?
    • The drive comes in a 2.5-inch form factor and is 9.5 mm in height.

  • Why is software required?
    • Software is required to unlock the 1 TB portion of the dual drive. The SSD portion is available to install/clone the OS to it.

  • Is the SSD 120GB or 128GB?
    • The SSD is 128 GB, however only 120 GB is available to end users. Most SSDs are overprovisioned to allocate a portion of the total flash memory to the flash storage processor for various memory management functions. The overprovisioning provides for better performance and endurance.

  • What is the warranty coverage on this product?
    • The drive has a 5-year limited warranty. Please see the warranty guide that is included in the box for the full details. Please see more information at http://products.wd.com/WDBlack2.
  • How do I return the dual drive to factory configuration?
    • WARNING: Returning the drive to factory default configuration requires deleting the 1 TB HDD partition. This will permanently erase all data off the HDD.
    • Please backup and remove all data on the HDD partition. Delete the HDD partition under Windows Disk Manager and then run the WD Black2installation software and choose the “uninstall” option.

  • I lost my USB Web key. Where do I go to find the WD Black2installation software?
  • Can I use the provided USB Key to store my data?
    • No, the key is only designed to provide a way to launch a web browser and link to the WD Black2website.

  • Can I dual boot?
    • Dual boot is not supported.

  • Can I run windows check disk?
    • Yes. Windows Check Disk can be run on both volumes.

  • Can I create multiple partitions?
    • Yes, you may create multiple partitions as long as the partition does not span between the SSD and HDD devices.
    • Please see Microsoft.com for more information on how to create and resize partitions in Windows.

  • When the SSD is full will the data then start to store on to the HDD?
    • No, they are two separate volumes.

  • Can I back up my SSD to my HDD or vice versa?
    • Yes, but due to the size difference, backing up the HDD to the SSD may not work. Also, it is recommended to backup data to a separate physical storage device.

  • Can I encrypt the SSD and HDD?
    • Software-based encryption can be used on both volumes.

  • What happens if the SSD or HDD fails?
  • Can I install my applications on the HDD?
    • Yes. If the applications allow installations to a separate volume.

  • Why doesn’t the WD Black² Installation software detect my drive?

    • Please make sure the WD Black² drive is physically installed inside the computer and not connected via a USB connector.
    • Some PC system manufacturers ship their systems with the BIOS set to a RAID configuration. Please check that your SATA configuration is set to a non-RAID option, such as EIDE or AHCI
    • If the computer system uses an NVIDIA storage driver, it is not supported since the storage driver prevents the software from installing.
    • The ASMedia controller chipset is not supported.

  • Why doesn’t the Acronis True Image software detect my drive?

    • The WD Black² drive will most likely need to be initialized in Windows Disk Management for Acronis to detect the drive. Please see Knowledge Base article 1018 for more information.

  • Why is Acronis True Image software unable to clone my drive?
    • For Windows 8/8.1 make sure to disable Secure Boot in the system BIOS. See Knowledge Base article 11016 for more information.
    • Run Checkdisk and defragment the source drive prior to help prevent errors.

  • How can I diagnose the health of my WD Black2?
    • The health check feature is not supported in the installation software. Please see Knowledge Base article 940 on how to use WD’s Data Lifeguard Diagnostics or any 3rd party utility software to read the SMART status on the WD Black2 drive

  • If the SSD fails or has reached its write life, Can I retrieve my data?
    • Yes. In any case that the SSD reaches its life expectancy or experiences a failure, the SDD will be in read-only mode and the HDD portion of the dual drive should be fully accessible.

  • How can I disable the HDD portion of the WD Black2?
    • Please backup and remove all data on the HDD partition. Delete the HDD partition under Windows Disk Management and then run the WD Black2installation software and choose the “uninstall” option.

System Requirements:

  • What operating systems does the WD Black² Dual Drive support?
    • The operating systems supported are Windows 8.1, 8, 7, Vista, and XP (32-bit). Mac OS is not supported at this time.

  • Can I RAID the two drives?
    • No. Because of the design of the product, RAID will not work or will have issues.

  • Any other configuration or system limitations?
    • The dual drive does not support the ASmedia controller.
    • There are some systems that cannot physically accommodate the dual drive.
    • Please see the WD Black² Dual Drive product pages for the full list of known system limitations.


  • How do I physically install my WD Black2 drive?
    • The installation instructions can be found in the Quick Install Guide that came with the product or you can go to http://products.wd.com/WDBlack2 for a useful how to install video.

  • How do I enable the HDD portion of my WD Black2 drive?
  • How do I initialize my new drive in Windows?
    • If required, the dual drive can be initialized in Disk Management in Windows. Please refer to knowledge base article 1018 at http://support.wdc.com.

  • What size drive bay will the WD Black2 drive fit in?
    • The WD Black2drive is designed to be installed in any standard 2.5-inch x 9.5 mm drive bay. Please note that some notebook chassis may not have sufficient room to install the dual drive due to interference near the connector.
    • Installation in a 3.5-inch drive bay may be done with a 2.5-inch to 3.5-inch mounting bracket (not provided).

  • Why does the drive only show 120 GB when I install it?
    • Only the SSD portion of the drive is displayed during initial setup to ensure that the operating system is put on the correctly sized partition. Once the WD Black2software is installed, the remaining 1 TB will be visible.

  • Why can’t I make a single 1120 GB partition?
    • The WD Black2drive has two physical devices so while Windows will allow you to create one large partition there will be errors when the OS attempts to write across the two devices.

  • Can I keep more than 120GB of files on the SSD portion of the WD Black2drive?
    • No. the SSD partition is limited to 120 GB. However, the full total capacity is 1.12 TB after installing the WD Black2 software.

  • I have more than 120GB of data on my old drive. How do I clone?

OS Questions:

  • Which operating systems does the WD Black2 support?
    • Windows® 8.1, 8, 7, Vista®, and XP (32-bit)

  • Will the WD Black2drive work in a Mac?
    • The Mac OS is not supported at this time.

  • Once the HDD is enabled, will I have two disk volumes?
    • Yes. The SSD will be the boot volume, which is typically the C: volume, but the WD Black2install software is required to enable the second volume. The letter for the HDD portion of the drive will depend on how your system is configured. For example, if your DVD/CD drive is configured to show as D: then the WD Black2may appear as drive E:

  • If the partitions span across the SSD and HDD, what can I do?
    • The total amount of data stored on the SSD partition needs to be less than 100 GB so that all data will fit on the SSD. Then run the WD Black2 installation software using the reinstallation option (If reinstall is not available, a regular install is fine). A reboot is required after this procedure. Note: the user data will not be affected.

  • Can I resize my partitions once the software is installed?
    • Yes, but care must be taken to not have a partition span between the two devices.

  • What will the Windows Disk Management show after the WD Black2Install program has been run?

  • Can I use the Windows defragmentation tool to reduce the file fragmentation on the SSD or HDD?
    • Windows will see the WD Black2as an SSD drive so defragmentation will be disabled. Third party software can be used to defragment the drive but it is not recommended to defragment an SSD as it causes unnecessary writing to the disk and can decrease performance.

  • Can I trim the SSD?
    • Windows will see the WD Black² as an SSD drive and will allow trim. Trimming the HDD will not improve performance.


  • Can I RAID the two devices in the WD Black2 drive?
    • No. Because of the design of the product, RAID will not work or will have issues.

  • Is Storage Spaces available on this drive?
    • The drive does not support this Windows feature.


  • Can I use cloning software that I am already comfortable with to clone my current drive to the dual drive?
    • Yes.

  • Can I use the Acronis True Image software to copy my data from my old drive to the HDD portion of my dual drive?
    • WD recommends that you use Windows to copy and paste or drag and drop your data from your old drive to the new dual drive.

  • What if my primary drive is larger than the SSD?
    • You will need to exclude documents, pictures, etc. until the total is less than the SSD drive capacity.
    • Please see Knowledge Base Article 10491 for more details.


  • Why is there an extra connector on the included SATA to USB cable?
    • Some notebook systems may not provide sufficient power to the attached drive. For those systems the extra connector may be plugged into another available USB port to provide additional power for the attached drive.

  • I lost my SATA to USB adapter cable.  Can I use a 3rd party drive enclosure or my own SATA to USB cable?
    • For transferring data from the old drive to the new drive, yes, as long as the cable or enclosure supplies enough power to spin up the drive correctly. If the old drive is being cloned to the new dual drive, the supplied SATA to USB cable will most likely need to be used so that Acronis can properly detect the WD drive.

Experience the drive of the future

The WD Black² Dual Drive is not only a drive from the future, but it carries an experience of it's own. As a thank you to our loyal fans, we've included downloadable content and a link to our interactive microsite so that you can share your experience with the power of 2 with friends and family.

WD Black² desktop wallpapers

Click Model # for Full Specs.
 Model #InterfaceForm FactorCapacity 
WD1001X06XDTLSATA 6 Gb/s2.5 Inch120 GB SSD + 1 TB HDD

Mouse over each icon to see how it was calculated.

Examples of the number of photos, songs, videos and any other files that can be stored on a hard drive are provided for illustrative purposes only. Your results will vary based on file size and format, settings, features, software and other factors.

As used for storage capacity, one megabyte (MB) = one million bytes, one gigabyte (GB) = one billion bytes, and one terabyte (TB) = one trillion bytes. Total accessible capacity varies depending on operating environment. As used for buffer or cache, one megabyte (MB) = 1,048,576 bytes. As used for transfer rate or interface, megabyte per second (MB/s) = one million bytes per second, megabit per second (Mb/s) = one million bits per second, and gigabit per second (Gb/s) = one billion bits per second.

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