I was not trying to resize windows partitons although it was a nightmare to pull together various windows10 / OEM (HP) manufacturer partition combinations on this particular GPT setup. So, for a test of installer sake I will do the following: -recheck windows partition with chkdisk -see if I can recheck separate FAT32/weird EFI flagged EFI partition for correctness connected with that, I see on that partition garbage characters inside of a dir where it should be entries for ubuntu /GRUB shim LEt me do all that job and get back with results. As its 02AM here - expect it in 12 hours from now Regards On Wed, Aug 31, 2016 at 8:03 PM, Phillip Susi