I'm new to managing hard disks, and was editing partition table. Today, I accidentally restarted my ubuntu after deleted partition(/dev/sda1, /dev/sda2/, /dev/sda5) and before create new partition table by using fdisk command. Of course, I cannot boot this and have to struggle with initramfs program.
In this environment, how we should create new partition? I can not use fdisk command now and have no idea what program I should use.