said by janderso1:I tried Vista 64 bit and Windows 7 both 32 and 64 bit with the same failure. I then googled
Usb flash partitions
and found this utility they may solve your issue. I havent tried it yet.
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www.lancelhoff.com/multi-partiti···windows/Edit
I just tried it. It work on a USB flash drive.

It failed on a SD card in a card reader.

Flash drives are large enough now that partioning them can be useful.
The page is gone when you click on the link. Luckily, a version of the page still exists in Google's cache.