Can't Use External Hard Drive as Backup Device

[fshoff]

I have a firewire external drive mounted on Mac OS 10.4, and set up as a shared folder. I can access it on Vista Ultimate virtual machine, but I can't use it as a backup device in Windows Live OneCare on that virtual machine. I get a message (attached) saying "Unsupported Network Share Name...onlly SMB shares are supported. Please change the share name and try again."
Is there a way to do this?
fshoff

 

[Flagg]

fshoff,

It is very likely, that you have a name in an unacceptable format. Could you please write your external drive name either here, or send it to me by PM?

 

[fshoff]

More information on "Can't Use External hard Drive as Backup Device

Thanks Flagg.
When I connect the external drive with Firewire, the drive appears on the Mac OS as a mounted drive and in the Vista Guest OS as a Parallels Shared Folder named "WD My Book". If I connect it by USB it doesn't appear on the Mac OS and appears on the Windows OS as "WD My Book on '.psf' (V", but if I try to open or explore it, I get a message: "V:\ is not accessible. The network path was not found."

Apparently it needs to appear in Vista as an accessible mounted drive in order to use it as a backup device in Windows Live OneCare, which is what I've been trying to do.

The drive is currently formatted as a Mac OS Extended (Journaled) Drive. I have tried reformatting it for Windows, but the Mac Format program offers only FAT 32. I did reformat it in FAT 32 and then reformatted it on the Windows OS as NTFS. After that, it could not be accessed by either Window or Mac OS. I then returned it to the Mac format.

Any suggestions?
fshoff