Hello. I was hired by someone to install Arch on their older computer. They have an Efi system and I tried to install grub and os-prober like on a bios system because I didn't realize it's an Efi computer until it was too late. When I unmounted the partitions and rebooted, the computer entered the Efi shell. What can I do from here? Thank you!
P.S. The partition scheme is something like /dev/mmcblk1pX, where X is the partition number.
P.S. The partition scheme is something like /dev/mmcblk1pX, where X is the partition number.