I too got the same problem as that of firstname.lastname@example.org
; the issue of GPT and EFI issue, Is there any method for making GPT partition labeling during installation process. however I can create the EFI filesystem during the installation process.
"The thing is that, when the installation proceed it get stop and the message get arise for /dev/sda that is the GPT partition label is not created"
what shall i do for further process?
looking for your help buddies!!!!