Reading/Writing disk sectors on non-standard file systems

I need to be able to write data directly to floppy disks that don't have standard boot sectors (that is, that have sector 0 filled with random data).

I already managed to create a read/write system under Windows 95/98/ME using VXDs and under Windows NT/2000/XP using the DeviceIOControl API, however, both methods fail when sector 0 contains non-standard data.

Is there any way to either [preferably] modify the existing methods (stated above) to support non-standard boot sectors or, alternatively, use a different approach to the raw disk access?

ANY help would be greatly appreciated.

You should be able to use CreateFile() to open a handle to the disk which gives you direct access the individual sectors (including the boot sector). This method only works under NT/2000/XP though. Have a look at:

http://support.microsoft.com/default.aspx?scid=kb;en-us;100027

-no1