It is much more likely that the 'Pendrive' has been 'normally' formatted under a NT based system (and since it is 'Removable' under this OS it has been NOT partitioned).īIOS's want partitioned devices and don't like 'superfloppies' (and don't care about the 'Removable bit'). ONLY Windows NT based systems are seemingly 'affected' by the device 'Removable bit' (if this is what you are refeerring to, but if it is then it can be flipped on and off at will, once you get the 'right' tool AND you manage to use it ). There is a DOS driver that can detect USB storage devices, you may have to load it in autoexec/config. We use RUFUS to create USB flash drives and install Windows 98 SE onto a Retro PC. What exactly are the boot options in regard to selectable devices (USB Floppy/USB HDD/USB CD-ROM/USB ZIP/etc)?
Your BIOS probably doesn't accept booting from removable drives. There is a trick to make a removable flash drive appear as a fixed drive but that is irreversible AFAIK.