How can I make a USB flash drive appear/not appear as a CD drive?

How can I make a USB flash drive appear/not appear as a CD drive? I recently was given a small USB flash drive as an advertising gimmick. When I plug it in, only one drive appears: a CD drive with 42kb used (just an autorun.inf file which launches the manufacturer's website). I know U3 drives also appear as CD drives, but their uninstall utility only works for their own drives.
Asked by: Guest \| Views: 267

Total answers/comments: 1

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bert [Entry]

"Hey guy, I have done with my usb FD serveral times to make it into 2 devices CD and usb.
The only thing you must do is download chipgenius then run it,wait for it to identify your usb then go to search your usb firmware tool.
If you get the correct one i'm sure there will be no problem.
I had done that and turned my usb into hiren boot cdrom, and when boot from bios you no longer choose your usb name but choose usb-cdrom option."