I have a fedora guest OS in VMware. I want to expand
/boot partition, so I add another virtual disk to this VM, and try to clone the disk.
dd if=/dev/sda1 of=/dev/sdb1,
blkid report that /dev/sda1 and /dev/sdb1 have same UUID/GUID.
It's weird that there're 2 same UUIDs in the universe, how to change one of them to another UUID value?