Your disk is currently partitioned to boot in bios mode, but you booted
the installer in EFI mode. You either need to boot the installer in bios
mode, or partition the disk using GPT and set up an EFI system partition
to install in EFI mode. This will be done for you if you choose the "use
entire d
** Summary changed:
- I have recently downloaded ISO image of ubuntu 18.04 and was trying to
reinstall by erasing all my current ubuntu 16.04 partition. I was having
windows 10 dual boot with ubuntu 16.04 . I have used a bootable flash drive to
reinstall ubuntu 18.04 but it ended up giving erro
