Using a USB Drive on a Mac


Using a USB Drive on a Windows PC

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Unfortunately this unit does not have any security or write protection features. If you receive a write protection message with this drive, check for the following:

  1. Verify that you are allowedto write to removable storage devices. There may be a securitysetting in the OS that disables write access to removable storage devices.
  2. Make sure you have notenabled write protection on the drive by using a third party software.
  3. If none of the above apply,the drive may be defective. Contact Kingston TechnicalSupport for further assistance.
FAQ: KDT-011411-PW-08

If you have data on the DataTraveler that is important to you, we strongly recommend that you use one of the two possible means of data recovery (see below). Kingston does not offer data recovery services. For more information on ourwarranty policy, please visit

  1. Contact a company thatspecialises in data recovery services, such as Driver Savers at or Ontrack at or carry out a Googlesearch for "data recovery".
  2. Go to, search for "datarecovery" and download one of the many utilities for data recovery whichare fairly simple to use. We suggest trying one of the free versions as they work just as well as the paid versions. However for this option to work, the computer must assign a drive letter to the device. Even so it is not guaranteed to work. If it does not, option 1 would be your best bet.


FAQ: KDT-012611-GEN-25

Yes, this DataTraveler issupported by Linux as long as you have Linux Kernel 2.6.x and above.

Please note: If the DataTraveler comes with software, it will not function with Linux. Only the drive itself is compatible with Linux.

FAQ: KDT-011411-DRV-02

1. The DataTraveler could be conflicting with a pre-assigned drive letter. To resolve, do the following (Do not do this for a "Privacy" drive that assigns two drive letters):

    1. Insert the DataTraveler and open "Control Panel". Then open "Administrative Tools".
    2. Open Computer Management
    3. Select “Disk Management” on the left window pane.
    4. Locate the DataTraveler on the right window pane.
    5. Right-click on the drive and select “Change Drive Letter and Paths.”
    6. Click Change and select a new drive letter from the drop-down box. Then click OK.

2. The DataTraveler may be conflicting with pre-installed software. Disable all applications running in the background prior to installation of the Data Traveler.

3. Make sure Windows, any USB controller drivers and the system BIOS for you computer is up to date.

4. If you have a desktop computer, make sure the DataTraveler is inserted directly into one of the main USB ports on the back of the PC. Front ports, keyboard ports or USB Hubs may not supply sufficient power for the High Speed DataTraveler to function properly.

5. Check for a possible conflict is another USB device such as a printer or USB card reader. Unplug the other USB device, insert the DataTraveler drive and restart the system. After the DataTraveler is configured you should then be able to connect the other USB device.

FAQ: KDT-012314-GEN-02

The files on your Data Traveler microDuo can be accessed via your Android device’s file explorer. The file explorer can be found in the apps menu of your Android device. If your device does not have a file explorer we recommend that you download your preferred file explorer app from Google Play™.ES File Explorer is available for free download.

FAQ: KDT-022714-DUO-01

Please ensure the microDuo USB Drive is fully inserted into the microUSB port on your mobile device. Some mobile devices may have protective cases that could interfere with the full and proper connection between Data Traveler microDuo and the microUSB port of a mobile device. You may have to remove the protective case on your mobile device to obtain a full and proper connection.

Data Traveler microDuo is designed to be compatible with USB-On-The-Go (OTG) enabled Android devices. Please verify that your mobile device is compatible with the microDuo USB Drive and that you have properly connected the drive to your Android device. Please visit to verify compatibility with your device.

Some microDuo USB Drives (64GB and higher) are preformatted with the exFat file system and certain Android devices do not support exFat. In this case, please format the drive to the Fat32 file system using your computer.Some mobile devices may disable power to the microDuo USB drive when the device's battery reaches a critically low level. This may cause the microDuo USB Drive to be unrecognisable until the battery is charged and the device has rebooted.

FAQ: KDT-022714-DUO-02

- Access the settings menu of your device

- Access the Storage Menu

- Select Unmount USB OTG storage

- Select OK if prompted

Note: After selecting Unmount USB OTG storage, some mobile devices will prompt the question “Unmount SD card?”.This prompt is set by default for some mobile devices. Please make sure that you have selected Unmount USB OTG storage, and then select OK.

FAQ: KDT-022714-DUO-03

Sorry, Apple iOS and Google Nexus devices do not have USB On-The-Go (OTG) support. For a list of compatible devices please visit

FAQ: KDT-022714-DUO-04

This prompt is set by default for some mobile devices. Please make sure that you have selected Unmount USB OTG storage or Format USB OTG storage, and then select OK.

FAQ: KDT-031714-DUO-05
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To transfer files larger than 4GB, the DataTraveler must have a NTFS or exFAT file system. Unfortunately, the FAT32 file system is not capable of handling a single file larger than 4GB (to be exact, one byte less than 4GB). Follow the steps below to format the DataTraveler with an NTFS File system:

Warning, all data on the DataTraveler will be lost! Please back up the data on the DataTraveler before proceeding.

  1. Locate My Computer(Computer in Vista and 7). Right-click on the Kingstondrive and select Format.
  2. Select NTFS or exFAT fromthe file system drop-down list.
  3. Select Quick Format as theFormat option and click Start.
    Note: If NTFS is not an availableoption, close the Format window and follow steps 4-9.
  4. Right-click My Computer(Computer in Vista) and select Properties.
  5. Select the Hardware tab andclick Device Manager.
  6. Expand Disk Drives andright-click on the Kingston drive. Select Properties.
  7. Click on the Policies taband select "Optimize for performance”.
  8. Click OK.
  9. Repeat steps 1-3.

Be aware that MacOS 10.6.5 will support full read and write access to exFAT formatted drives. MacOS still has read only access to NTFS formatted drives.

Some devices (MP3 players,digital photo frames, etc) will not read NTFS or exFAT file systems.

Also, Windows XP and Vistawill require an update in order to access exFAT.

FAQ: KDT-010611-GEN-05

You may have formatted the drive with an exFAT file system while using Windows 7. In order to resolve this, reformat the drive with the FAT32 or NTFS file system. You may also be able to update your operating system to be compatible with exFAT. However, be aware that some devices (MP3 players, digital photo frames, etc) will not read the exFAT file system.

FAQ: KDT-010611-GEN-10

Some of the flash storagedevice’s listed capacity is used for formatting and other functions and is notavailable for data storage. Therefore, you will not see the full capacity.

When a flash storage device is manufactured, steps are taken to ensure that the device operates reliably and permits the host device (computer, digital camera, PDA, etc.) to access the memory cells; i.e., to store and retrieve data on the flash storage device. These steps, loosely called "formatting", use some of the memory cells within the device and thus reduce the capacity available for data storage by the end user.

Formatting includes the followingoperations:

  1. Testing each memory cell inthe flash storage device.
  2. Identifying all defectivecells and taking steps to ensure that no data will be written to or read from adefective cell.
  3. Reserving some cells to serve as "spares." Flash memory cells have a long but finite lifetime. Therefore, some cells are held in reserve to replace any memory cells that may fail over time.
  4. Creating a File AllocationTable (FAT) or other directory. To enable flash storage devices to store and access customer files conveniently, a file management system must be created to allow any device or computer to identify the files stored in the flash storage device. The most common type of file management system for flash storage devices is the File Allocation Table (FAT), which is also used on hard drives.
  5. Reserving some cells foruse by the flash storage device’s controller, e.g., for storing firmwareupdates and other controller-specific information.
  6. Where applicable, reservingsome cells for special features. For example, thespecification for Secure Digital (SD) cards requires reserved areas to supportspecial copy protection and security features.
FAQ: KDT-010611-GEN-06

To resolve this, make sure to insert the drive directly into the USB ports located on the computer. The USB ports found on the keyboard and some hubs may not supply sufficient power to operate the Kingston DataTraveler properly. Also, go to Finder>Preferences>Sidebar and ensure that CD, DVD and iPod and External Disks are selected.

FAQ: KDT-010611-GEN-18

Windows assigns new drives to the next available physical drive. It will sometimes take the same drive letter as a network drive for this reason. This is a common problem with removable storage devices.

To resolve this go to Control Panel > Administrative Tools > Computer Management. Note the drives on the right window pane. See if the Kingston (x) is recognised. (x) denotes the drive letter that Windows assigned to the Data Traveler.

If the DataTraveler isusing the same drive letter as one of the other drives, right-click theKingston Drive letter and click on "Change Drive Letter and Paths".

In the next dialog box,click on the "Change" button and assign a drive letter that is notcurrently being used.

Note: Do not manually change drive letters if you have a "Privacy" DataTraveler that assigns two drive letters for the device.

FAQ: KDT-010611-GEN-03

On Macs, you first have to empty the trash can in order to regain the space. You may have to plug the drive back in after emptying the trash.

If this does not work then the device should be completely reformatted. Please follow these instructions for formatting your Kingston device.

WARNING: Formatting will erase all your data so please make sure you have a copy before proceeding.

  1. Go to Go > Applications > Utilities and Open Disk Utility.
  2. Choose your drive from theleft panel and then click Erase on the right.
  3. Select a Volume Format.Choosing MS-DOS File System will allow the drive to work on the Mac and Windows operating systems. If used only in a Mac then select Mac OS Extended as the Volume Format.
  4. Click Erase.

FAQ: KDT-010611-GEN-04

This happens if the DataTraveler has been formatted with Microsoft Windows NTFS. To resolve, format the DataTraveler with Mac OS X using MS-DOS File System.

To format the DataTraveler with Mac OS 10.3.X, do the following:

  1. Click on the "GO" option on the menu bar.
  2. Double-click on "Utilities" (If you do not see Utilities, double-click on Applications and then double-click on the Utilities folder.)
  3. Double-click on the "Disk Utility" icon.
  4. On the Disk Utility Dialog box, click once on the Kingston DataTraveler active partition.
    Note: There will be two listings for the Data Traveler, the first one is the active partition and the second is the volume label.
  5. Click the erase tab located on the right side of the screen.
  6. Using the Volume Format drop-down, select "MS-DOS File System" from the list.
  7. Click Erase.

Be aware MacOS 10.6.5 will support full read and write access to exFAT formatted drives. So formatting the drive using exFAT file system may also resolve this problem. MacOS still has read only access to NTFS formatted drives.

Some devices (MP3 players, digital photo frames, etc) will not read NTFS or exFAT file systems.

Also Windows XP and Vista will require an update in order to access exFAT.

For additional assistance using the Data Traveler, please visit to view the DataTraveler "How To" videos.

FAQ: KDT-010611-GEN-08

Follow the steps below toformat the DataTraveler with an NTFS File system using a Windows PC.

Note: Admin rights are required.

  1. Remove all other externalflash devices from your computer.
  2. Right-click My Computer(Computer in Vista) and select Properties.
    Note: If User Account Control isenabled in Windows Vista, an alert will display. Click Continue to proceed.
  3. From the right side window,double-click Storage and then double-click Disk Management.
  4. From the right side window,right-click the Kingston (Removable) drive and select Format.
    Note: You may receive a warning: "This is the active partition on this disk. All data on the partition will be lost. Are you sure you want to format this partition?" Click Yes to proceed.
  5. In the Format window,select the “NTFS” file system and select the box next to “Perform a quickformat”. Click OK.
  6. Click OK on the Format Warning window.

The Kingston (Removable) drive window will display "Formatting" while the drive is being formatted. Once the format is complete, the status will revert to "Healthy".

FAQ: KDT-010611-GEN-17

ReadyBoost is a Windows Vista and Windows 7 feature which has the ability to use USB flash drive storage space to improve system performance. The DataTraveler does not support Windows ReadyBoost.

FAQ: KDT-010611-GEN-11

If you have determined that you were sold a counterfeit product, please visit our counterfeit reporting site at

To determine if yourproduct is counterfeit, please contact our technical support department.

The only way to guarantee the authenticity of a Kingston product is to purchase it via a reputable partner. For a listing of some of these, please visit

FAQ: KGF-011411-GEN-01

Although it is possible to boot from the DataTraveler, it is not a feature Kingston supports.These drives are intended as storage devices.

FAQ: KTD-082913-GEN-27
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