Many new desktop and server motherboards are coming without legacy 34-pin floppy connectors. This means it is necessary to add an external USB floppy drive to load SATA RAID or SCSI drivers [F6 method]. This can only be done from a floppy disc with Windows XP, 2000, or 2003 (Vista can load them from USB flash drive).

A problem will arise with certain USB floppy models, most notably certain Sony and Mitsumi models and certain others. It is caused by how Windows recognizes the USB floppy drive. There are two solutions:

1) Use another brand USB floppy that is compatible

2) Modify the driver file so it will recognize the USB floppy drive correctly

To modify the RAID drivers find the file called “txtsetup.oem” then 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 (copy and paste below):

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.

See also this Microsoft KB article as well - http://support.microsoft.com/default.aspx/kb/916196/