Efi grub installation


New Member
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.


Active Member
Boot the Installation-Stick make a esp resize the System Partition. Use archchroot, Mount the esp and install the grub.

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