After I used dd to clone a 120 gb hard disk to new empty 320 gb hard disk, the new disk cannot be booted. And fdisk tell me the partition table is no valid and Gparted just cannot edit the partitions.(I supposed I need to create a new partition on empty space)
The command I used to clone disks is:
dd if=/dev/sda1 of=/dev/sdb
Any way to restore the partition table? or what is wrong with my way to clone disk?