Windows* by default does not have drivers for all USB floppies. When utilizing a floppy for adding RAID drivers, you may notice that the driver is loaded once. Later during installation, the operating system re-requests the file, but fails to find the floppy drive on the second attempt. If you are loading additional drivers during installation, there will be a file on the floppy called 'txtsetup.oem'. Open the file on another machine using a text editor such as Notepad, and add the following lines to the bottom of the [HardwareIds.scsi.(device name)] section
id = "USB\VID_03F0&PID_2001", "usbstor"
id = "USB\VID_054C&PID_002C", "usbstor"
id = "USB\VID_057B&PID_0001", "usbstor"
id = "USB\VID_0644&PID_0000", "usbstor"
This tells the operating system to use the standard USB storage driver for these additional floppy devices. You may need to contact your USB drive vendor to obtain their Vendor ID (VID) and Product ID (PID) if these lines do not resolve the issue.