Targa DataBox II 250 Manual Del Usuario página 14

6. TROUBLESHOOTING AND FAQ'S
Generic Problems
? My computer does not display the hard disk drive.
My computer shows a smaller hard disk capacity than the one indicated on the package.
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My hard disk is not running
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My applications seem to run very slowly on the USB 1.1 port.
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A message appears saying that I have a high-speed device connected to a port only supporting a low
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data transfer rate.
? The data transfer rate of my USB 2.0 adapter card seems to be too slow.
The application programs I have installed on my hard disk fail to execute.
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My computer does not display the hard disk drive
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Is the hard disk working?
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The green LED on the drive's front panel should light and you should feel slight vibrations when putting
your hand on the drive.
Are the USB cables properly connected?
!
Please make sure that all cables have been connected according to the installation instructions in "Step
2: Connecting the TARGA DataBox".
Have you tried repeatedly turning the power on and off?
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a.) While the computer is running, remove the USB cable from the drive.
b.) Wait for ten seconds, and re-connect the cable to the device.
Please check if the drive gets detected by your computer system.
! Is the operating system up-to-date?
at least SP-4 for Windows 2000.
Have you tried to manually assign a drive letter?
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Control Panel > Administration Options > Computer Management > Disk Management, and then enter a
free letter for the drive, e.g. < S >. After restarting or updating <F5>, the drive should be available under
the specified letter.
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Tips for Windows
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- Does the Device Manager recognize the USB adapter card, and is it working properly?
To open the Device Manager:
a. Click Start, Settings, and Control Panel.
b. Double-click the System icon.
The System Properties dialogue box appears.
c. Click the Hardware tab and then click on Device Manager.
d. Double-click one of the following entries: Universal Serial Bus.
If your interface card has been properly installed you may need to re-install
or to update its driver.
a. In the Device Manager, double-click on Disk Drives. The list shows an entry for your USB device. If
there is a yellow exclamation mark next to it, the device is using the wrong driver.
b. Right-click on the entry for the USB device and select Properties.
c. Open the Driver tab and click Uninstall or Update Driver.
d. Follow the instructions of the Setup Wizard. If the exclamation mark does not
disappear, visit the TARGA support site at www.targa.de.
My computer shows a smaller hard disk capacity than the one indicated
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on the package.
The hard disk capacity under Windows (e.g. 250 GB) is smaller than the capacity specified by the
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manufacturer
This is because the manufacturers calculate the size by defining one Kilobyte as 1,000 bytes. But one
Kilobyte really counts 1,024 bytes. Therefore, the size of a 250 GB hard disk is: 250,000,000,000 bytes
corresponding to 250 GB (as defined by the manufacturers by dividing by 1,000).
However, the real size is:
250,000,000,000 bytes / 1024 = 244140625 Kilobytes
244140625 Kilobytes / 1024 = 238418.58 Megabytes
238418.58 Megabytes / 1024 = 232.83 Gigabytes
Windows would show this value (232.83 GB) as the size of the complete media
(e.g. in Explorer).
6. TROUBLESHOOTING AND FAQ'S
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