RT Disk Utility Create PC USB Disk Utility will not recognize USB device

[Yevoc42]

Can you tell us what USB flash drive you're using?  Disk extents means it doesn't like the disk geometry (size) that your drive is (or isn't) reporting.  Presuming you haven't, you should try fully formatting the drive as FAT16 or FAT32.

Assuming you can't try a different USB device, I can steer you toward the original work done on this format utility:

http://freshmeat.net/projects/makebootfat/

http://sourceforge.net/forum/forum.php?forum_id=448362

If you really truly wanted to find the source of the problem and fix it, the source code for the utility is in the first link.

[Taylor.Kendall]

I was able to update with the 8.6.1 patch and now it recgonizes it fine.  But doing it in command line worked fine. 

[Samy_Nature_Lover]

Same issue occurred for me in Windows 7.0 64 bits and LabVIEW 2020(FPGA+Real-time+FPGA Vivado 2017-2 and 2020 R-Series RIO). I could build the USB DESKTOP PC Utility flash in Windows 7.0's Safe-mode with MAX. Surprising when you are in Normal windows operation mode, any Flash memory from 8 Gigabyte to 16 gigabyte kept giving the annoying message of "Unable to detect USB drives" even-though the operating system of the host (windows) can work fine with the memory stick!!!