Ok, so i tested alternative ISO, and it works from USB/BIOS mode.
So, the issue is with grml-rescueboot on 16.04. There are several manuals on internet suggesting to use GRML for booting ubuntu installer ISO, and all other ISOs (except alternate) are working fine.
Ok, so i tested alternative ISO, and it works from USB/BIOS mode.
So, the issue is with grml-rescueboot on 16.04. There are several manuals on internet suggesting to use GRML for booting ubuntu installer ISO, and all other ISOs (except alternate) are working fine.