Can't back-up USB drive?

I plugged in a drive in a USB enclosure on my XP-Pro SP2 machine, and it gave me two new drive letters, since there are two partitions on the drive.

I launch the Windows version of True Imag3e 8.0 build 937 and choose back up. It presents me with a list of drives, and it does not include this one! I can't select it because there is nothing showing that drive and its partitions.

Windows drive manager shows it as drive 6, with nothing special about it.

What's going on?

--John

P.S. I tried searching the forum for this topic before asking, but it won't let me search for "USB" as being too short, too long, or too common.

 

Hello John,

Thank you for choosing Acronis Disk Backup Software.

Could you please click Start -> run, then type diskmgmt.msc and make a screen shot of Disk Management window?

Please also create Acronis Report as it is described in Acronis Help Post.

Please create an account, then log in and submit a request for technical support. Attach all the collected files and information to your request along with the step-by-step description of the actions taken before the problem appears and the link to this thread. We will investigate the problem and try to provide you with the solution.

Thank you.
--
Tatyana Tsyngaeva