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  • If UEFI boot with gpt partitions, there also are GUIDs that cannot match. GUIDs are shown as partUUID in many tools. Check for all duplicates: lsblk -o name,mountpoint,label,size,fstype,uuid,partuuid | egrep -v "^loop" As I posted in your link, I did new install in about 10 min to SSD, copied /home so I had my settings. I do have all data in another data partition, so I only had to set those links up. About an hour for a full working install that was at least 90% of install on HDD. Installing apps from list would add a bit, but I had not installed much in my test install on HDD. Commented Aug 10, 2020 at 14:36
  • I was using this info: Do not use dd to copy partition with gpt due to unique guids & UUIDs post #12 (author of gdisk) ubuntuforums.org/showthread.php?t=1680929 Do not use dd with gpt partitions. Whole drive ok if old drive not used anymore, or no duplicates. But do not use dd for copies from MBR to gpt partitioned drives, can use cp -a wiki.archlinux.org/index.php/Disk_Cloning Commented Aug 10, 2020 at 14:53