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#1
Fluidmotion,
You might try this in a command prompt (with administrative privileges): "chkdsk X: /r", without quotes and where X is your USB drive.
I also found this link. However, it is only something I looked up through a quick google search, so use at your own risk. From the ehow.com website: http://www.ehow.com/how_6055690_test...pen-drive.html
You got this "can not mount" error in Ubuntu or in Windows? When exactly did it pop up?
Did you change boot order on flash? If so, you hosed the install on the flash and will have to start over.
yep,
changed boot order,
USB diskette on key/USB hard disk is the first in order.