External hard drive asks for password and does not mount on desktop

Hello all,
I bought a portable FireWire external hard drive to connect to my iMac G4. When connecting via FireWire, a message window appears telling me that the external disk is password protected and prompts me to type a password. Neither typing my administrator password nor activating the checkbox "Temporarily remove protection" and clicking the Unlock button is successfull: the hard drive does not appear on the desktop but it is listed in the System Profiler under Fire Wire Bus. I tried the external drive on an iMac G5 where it works without any problem. So what shall I do? Does anybody know an issue to this? I will be glad for every answer.

Have you written any data to the external drive? If not, perhaps you could add some data.
Are you using filevault?
You could reformat it in disk utilities.
Here is the path...
Macintosh-HD -> Applications -> Utilities -> Disk Utility
It may be a problem with accessing the drive from different users, I could not recreate the problem with different users on my machine. I have only one machine with firewire.
Robert
Message was edited by: rccharles

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Welcome to Apple Discussions.
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External hard drive asks for password and does not mount on desktop

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