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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?

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  • I always suggest new install & restore from your backup. Also verifies that your backup is complete while you still have the old install to get any missing info. UEFI or BIOS installs. MBR or gpt drives. I like to use Boot-Repair's report just to document my system. help.ubuntu.com/community/Boot-Repair Duplicate UUID can lead to one partition getting updated one time & other next time without first set of updates, or major issue. Min Desktop backup should be /home & list of installed apps. Maybe some settings in /etc or anything else manually changed in / settings, like grub settings. Commented Feb 28, 2024 at 14:22
  • GParted will allow you ro copy partitions using the GUI. Click sda4, then right click, choose copy, then right click sdcas a whole, and choose paste. No reason to clone at all as long as sdc contains free space. You can't copy a partition into an existing one. Commented Feb 28, 2024 at 17:56

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