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The problem with 'Oversize' Floppy disks is that your Computer BIOS does not know how to handle them, that includes Microsofts 1.68MB DMF Format. All Microsoft Bootdisks are limited to 1.44MB for the same reason. If you look at the Windows 95 DMF Disk set, Windows 95 Non-DMF Floppy Disk Directory Listing (1 of 3)
The Bootdisk and Setup Disk 1 are in 1.44MB Format while Disk 2 to 13 are 1.68MB DMF Format. That is so the DMF loader can be installed. FD Format is a Utility that can create 'Oversize' Floppy Disks such as 1.68MB and 1.70MB but they need FDREAD to access most of them. which loads after the boot process. So as far as I can see it cannot be done.