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Troubleshooting – Kanguru e-Flash User Manual

Page 19

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4. Troubleshooting

Q: Can I use this device with Windows 95 / 98 / NT / ME?

A: No, these versions of Windows do not provide adequate support for eSATA. Please upgrade

your version of Windows.

Q: Can I use both the USB and eSATA connections at the same time to transfer data?

A: No, you cannot use both connections to transfer data simultaneously. Your device will

automatically transfer data through whichever side was connected first.

Q: The device cannot be detected or is disabled (has a yellow exclamation point next to the device

name in the Device Manager).

A: Make sure that you are logged in as the Administrator or a user with Administrator privileges

when you are installing new hardware. If the device is appearing in the Device Manager with

a yellow exclamation mark next to it, right click on the device and then select uninstall. Then

right click on the Disk Drives and then select Scan for hardware changes.

Q: The device cannot be detected even after I have scanned for hardware changes under the Device

Manager.

A: Your computer does not support hot swap. You will have to restart your computer with the

eFlash connected during boot up.

Q: I’m receiving the following warning when trying to safely unmount the device, “The device

cannot be stopped because a program is still accessing it”.

A: The device is still in use. Close all folders, files and programs that may be accessing the device

and then try again.

Q: I’m receiving the following warning when trying to safely unmount the device, “The device

cannot be uninstalled right now because the device requested a system restart”.

A: Even if no programs are accessing the drive, if something is referencing the memory on the drive

Windows fails to remove the drive and requests a system restart. Unfortunately, it is almost

impossible to prevent this situation before actually attempting to remove the drive. Please try

again later or restart Windows.

Q: How can the eFlash perform faster through eSATA than through USB2.0? Doesn’t the flash

memory limit the data rate?

A: Earlier generation NAND Flash memory and USB controllers did in fact throttle the transfer

speed of data over USB2.0. Modern NAND Flash and USB Controllers though have overcome

these limitations. Although there are many factors that contribute to the measured speed of

USB2.0 on a PC, the practical limit is typically ~35MB/s for bulk data transfer. This means that

by using the eSATA interface, the eFlash is able to overcome this transfer limit for enhanced

speed.

Q: Why can’t I copy some of my files to the eFlash?

A: There may be a single file size limit if your eFlash was formatted with a FAT32 file system.

FAT32 has a limit of 4GB per file. We recommend formatting the eFlash in NTFS if you will

be copying files of 4GB or bigger. Please note that formatting the drive will cause all the data

stored on the eFlash to be permanently erased. Also note that the NTFS file structure is not

compatible with all operating systems.

Maintenance and Care | Troubleshooting