Booting takes a long time

When I boot for the second time I get the following:

No EFI system partition
BootOrder not defined
EFI boot manager: Cannot load any image
Found EFI removable media binary efi/boot/bootaa64.efi
282624 bytes read in 15 ms (18 MiB/s)
Booting /efi\boot\bootaa64.efi
Welcome to GRUB!

After Welcome to Grub it become verry quit. Eventually it wil boot

I have a Le Potato with EMMC and run raspbian

What to do to not get this messages and speed up booting

Tanks