Thanks for the solution.
On Mon, Jun 25, 2018, 20:11 Phillip Susi wrote:
> 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
Public bug reported:
it happens when I choose a particular partion (other than root (/)) for
encryption during partition.
ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: ubiquity 18.04.14
ProcVersionSignature: Ubuntu 4.15.0-20.21-generic 4.15.17
Uname: Linux 4.15.0-20-generic x86_64
ApportV