Le 03/09/2017 à 14:26, Luis Speciale a écrit :
Le 03/09/2017 à 14:00, Pascal Hambourg a écrit :Le 03/09/2017 à 13:32, Luis Speciale a écrit :ls gives me(hd0) (hd0,gpt6)(hd0,gpt5)(hd0,gpt4)(hd0,gpt3)(hd0,gpt2)(hd0,gpt1) (hd1) (cd0)Obviously hd0 is the internal disk. So hd1 must be the USB drive. However ls should show partitions on it. I wonder if the image was properly copied. Can you check the partition table on the USB drive ?I don't see how I can do this. In my Mac, I get The disk you inserted was not readable by this computer.
Never mind. I misread what you wrote and though that you got the error when booting from the USB drive. Reading more carefully, I understand that the installation process completed without error or freezing and you are now rebooting from the internal drive.
cmdpath=(hd0,gpt1)/EFI/BOOTindicates that the EFI firmware loaded GRUB from /EFI/boot, which contains the fallback boot loader. However it should load GRUB from /EFI/debian as specified in the EFI boot entry that should have been created during the installation of GRUB. Both locations contain the same GRUB executable if you replied yes to the question about installing a copy of GRUB in the removable device path. Otherwise, EFI/boot may contain an obsolete version of GRUB from a previous installation.
$prefix and $root indicate that this GRUB expects its files to be located on partition 2, which should be the root partition. You wrote in a previous message that this partition contained the system directories. What is the output of
ls /boot If there is a grub directory, what is the output of ls /boot/grub