this question has already been asked a couple of times, however I can't find the answer for my problem in any of threads.I am trying to install the ubuntu gnome 16.1 which I had already installed once before. I also had installed other ubuntu versions before without running into any specific problem.however this time I tried to reinstall my ubuntu and I get the Fails to install grub-efi to /target/ error every time.I also get the UEFI warning which says there is another OS on my system not installed with UEFI mode and installing linux in this mode will broke the other OS. my other OS is Windows 10 and I installed the ubuntu gnome in UEFI mode the last time (I got the warning the last time too but didn't run into any problems). my laptop is relatively new one and I doubt my windows is installed in legacy bios mode.I can't find any ESP partitions on my laptop disk (unless it's the 500 mb ntfs at the beginning) and I don't remember ever making such a partition.another question is : I found there is a solution of skipping the grub install with ubiquity -b command.how do I use this while installing from live flash?thanks in advance and any help appreciated.UPDATE : I found out my windows is in fact installed in legacy mode.
ubuntu gnome Fails to install grub-efi to /target/
system installation;grub;uefi;ubiquity