genisoimage invalid option -- F

Hi! as you can tell from the subject I'm having issues with Genisoimage, to be more exact on both Ubuntu and mint:

I'm trying to repack a windows 10 iso from an extracted windows 10 iso. I've managed to figure out how to split and rejoin the .Wim file with wimsplit and wimjoin. When it comes time to build the iso i use this:

Quote:

genisoimage -output "/home/yikes/Desktop/10/Win10_split.iso" \ -no-emul-boot \ -b boot/etfsboot.com \ -boot-load-seg 0 \ -boot-load-size 8 \ -eltorito-alt-boot \ -no-emul-boot \ -b efi/win_efi_boot.img \ -boot-load-size 1 \ -iso-level 4 \ -UDF \ /home/yikes/Desktop/win10work/

however i keep getting this error:

Quote:

genisoimage: invalid option -- 'F'

I've tried changing the order of a few of the commands and I've even left a few out but it's always the same result.

I'm basically a newb so please don't be overly judgemental in your responses!