Partitioning a USB Flash Drive

What tool would allow to remove the Removable bit setting? Lexar USB Format is old and appears not to remove the bit from Cruzer Blade. Since only one partition is recognized afterwards anyway.

Creating a CD-Rom partition on the flash drive would allow to install to it and boot from it OS images not based on RAM-Drive usage, which limits use of such bootable drives on different PCs due to small RAM-Drive size and other shortcomings. Some 3-d party tools allow to add a virtual CD-Rom partition to U3 Sandisk Flash drives, but it doesn’t seem to work same way with non-U3 Sandisk drives. Possibly, a flash drive ability to load a CD-Rom partition is chipset specific. Or may be it just marketing prompted firmware limitation.

Can someone from Sandisk explain, why they limit a user’s ability to create a CD-Rom partition on their flash drives despite Sandisk stopped making U3 drives long ago? Why they don’t provide to end users flash formatting tools either, specific to their drives’ chipsets? Even recommended by Sandisk to end users recovery tools can’t format their own drives!