A tool that can flip the bit and should work with most usb flash drives is Lexar’s USB format tool. It is a portable tool that has been designed for Lexar USB drives but it works with other brands as well. The main interface can not only be used to flip the removable bit but also to format the usb drive, set a volume label and a partition to be bootable. You only need to press the flip removable bit button if you want to prepare the flash drive for use with multiple partitions. The drive has to be removed and connected again to the computer system afterwards.

It should be noted that Lexar USB Format (via Shell City) will not partition the usb flash drive which has to be done with other tools. For that you can use the build in tools in the operating system. Read Joshua’s System Partitioning With Vista article to find out how to do that in Windows Vista. A more universal software is the gParted Live CD which can be booted from any computer system.

Another option to create multiple USB stick partitions has been discussed before at Ghacks. The process involves editing the Windows Registry and has the disadvantage that the add-on partitions are only visible on that computer system.

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Users who want to create multiple partitions need a file called Hitachi Microdrive which contains the new driver that we are going to modify first and install afterwards. Unpack the package to a new directory on the hard drive. The first step is to find out the exact name of the USB stick that we want to use that way. The information can be found in the Windows Registry. Pressing [Windows R], typing [regedit] and hitting [Enter] will load the Registry editor.

The information are located in subkeys of the Registry key HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Enum\USBSTOR. The name of the USB stick can be found by clicking on the [+] sign in front of the key. All USB devices should be listed there. The name of the USB stick can be copied by left-clicking the subkey, right-clicking afterwards and selecting Copy Key Name from the context menu.

The key needs to be modified because it contains the full path. The best way to do that is to paste the contents into a text editor and remove all chars before Disk&Ven.

Now that this is done we need to copy the part that is left into the Windows Clipboard again by selecting the text and pressing [CTRL C]

The driver information needs to be edited in the next step before the new drivers for the USB stick are installed. Load the file cfadisk.inf in an text editor and locate the [cfadisk_device] section.

Replace the chars IDE\DiskIBM-DSCM-11000__________________________SC2IC801 in the first line with the name of the USB stick that you are going to use. Remove every other line in the category so that only the line with our modified USB stick name is shown in there.

The driver is now prepared and can be installed for the USB stick. Open the Windows Control Panel, the System category and there the Hardware tab. A click on Device Manager will load the Windows Device Manager which lists the computer hardware. The USB stick should be located in the Disk Drives category. Right-click the USB stick and select Update Driver from the context menu.

The Hardware Update wizard should pop up. Select the option Install from a list or specific location in the window and click next.

Check the Don’t search. I will choose the driver to install option in the next window and click next again.

A click on Have Disk in the next window will open a file browser. Locate and pick the file cfadisk.inf that has been modified previously. Clicking on OK will check the driver and show a warning message that the driver is not digitally signed. Press next on that screen.

Ignore the warning message and continue by clicking Yes. Windows should now start the installation of the driver for the USB stick and display a message that it finished the installation.

Windows is now requesting a reboot of the system to load the updated drivers properly. The USB stick should now be recognized as a hard drive. This makes it possible to create multiple partitions on the USB stick with a software partition program.

Please note that only systems with the updated drivers will recognize the additional partitions. Connected the USB stick to a computer without the modified drivers will only show the first partition of the USB stick.

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