Muhammad Yousuf Khan a écrit : > Please note that i am using gdisk to create GPT partition on new 2TB drive. You don't have to use GPT on a 2 TB disk. > moreover when i use command "ls" > > it shows me (hda0) I don't think so. GRUB names disks hd0, hd2... , not hda0. "ls" should show the disks and their partitions. Maybe the core image is missing the part_gpt module. You can try to reinstall it with grub-install --modules=part_gpt /dev/sdc