Clone a Linux partition to a new SSD and keep both partitions in GRUB

I have the following disks and partitions: sda 8:0 0 238,5G 0 disk ├─sda1 8:1 0 16M 0 part ├─sda2 8:2 0 174,5G 0 part ├─sda3 8:3 0 529M 0 part └─sda4 8:4 0 63,5G 0 part /var/snap/firefox/common/host-hunspell / sdb 8:16 0 931,5G 0 disk ├─sdb1 8:17 0 100M 0 part /boot/efi ├─sdb2 8:18 0 128M 0 part ├─sdb3 8:19 0 467,7G 0 part ├─sdb4 8:20 0 416,8G 0 part /mnt/storage └─sdb5 8:21 0 46,8G 0 part sdc 8:32 0 476,9G 0 disk sr0 11:0 1 1024M 0 rom sda is an SSD containing a Windows partition (sda2) and an Ubuntu partition I'm currently using (sda4). sdb is an HDD used mainly for storage. sdc is a new SSD. I want to clone sda4 to sdc and keep entries for both sda4 and the new cloned partition in GRUB. This is what I'm thinking of at the moment: 1. Use GParted to create an ext4 partition sdc1 on sdc. 2. Boot Clonezilla from a flash drive. 3. Clone sda4 to sdc1. 4. Boot Ubuntu from a flash drive. 5. Generate a new UUID for sdc1 using GParted or command line. 6. Mount sdc1 and update its /etc/fstab file with the new UUID. 7. Run sudo update-grub. I have doubts about the last point. Can it be done on a live Ubuntu? But if I reboot beforehand, I won't know which partition is present in GRUB - sda4 or sdc1 (and does it really matter?)? Is there an easier way to do all of that?