I am successfully using bitlocker. But when I try to do a duplicate startup key for backup my machine doesn't recognise it. I get an error telling me to remove disk or other media when I go to boot. It is not using a TPM. I have formatted the USB drive prior to saving the key and I can see it on the drive. Any ideas.

Hi Fresno,use one or more of the following methods: Make sure that the USB device is connected to one of the computer's USB ports. For example, do not connect the USB device to an external USB hub. Store the BitLocker key on a different USB device. The original USB device may not be compatible with BitLocker. Disconnect other USB devices from the computer. The computer's BIOS may not able to read the data on the USB device if other USB devices are present. Note The order in which the BIOS detects USB devices may affect BitLocker. Contact the manufacturer of your computer or your motherboard to make sure that the computer's BIOS can read data from a USB device when the computer starts. You may be able to update the computer's BIOS to a newer version that supports BitLocker. USB Devices that are used to start Windows PE or other operating systems may not work with BitLocker. Reformat the USB device so that it is not used as a startup device. --------------------Regards,Eric Zhang

Hi Eric -the problem isn't getting started with the key it is creating a duplicate one in the manage keys section of bitlocker. I will address your points one by one: Make sure that the USB device is connected to one of the computer's USB ports. For example, do not connect the USB device to an external USB hub. I am not using a hub Store the BitLocker key on a different USB device. The original USB device may not be compatible with BitLocker. How do I determine whether my second USB is compatible with either Bitlocker or by my BIOS. I would think my BIOS is OK as it can read one USBbitlocker key. Disconnect other USB devices from the computer. The computer's BIOS may not able to read the data on the USB device if other USB devices are present. I am not using other USB devicesNote The order in which the BIOS detects USB devices may affect BitLocker. Contact the manufacturer of your computer or your motherboard to make sure that the computer's BIOS can read data from a USB device when the computer starts. You may be able to update the computer's BIOS to a newer version that supports BitLocker. See answer above - the BIOS is OK USB Devices that are used to start Windows PE or other operating systems may not work with BitLocker. Reformat the USB device so that it is not used as a startup device. I have tried reformatting the USB - but I am unsure what you mean by "Reformat the USB device so that it is not used as a startup device." Regards, Chris.

Hi,Try to install this update:Download details: Update for Windows Vista (KB941600)http://www.microsoft.com/downloads/details.aspx?FamilyId=DAB2055A-EB6B-40E3-AE83-5200B7EF497B&displaylang=en--------------------Regards,Eric Zhang