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I have used dd before to clone hard drive's but I'm now attempting to clone an entire hard drive consisting of 3 partitions to another drive.

My partitions are named nvme0n1p1 to 3, I tried leaving the last number of but dd doesn't accept that, it requires one of the partition names.

What is the best approach to do this? Do I first have to create 3 partitions on the target disk or is there an easier way?

The nvme0n1p3 is the largest partition holding all the data, I guess the others are boot partitions (512m and 732M) or something, do I even need to clone them?

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If the disk is of equal or larger size, you should be fine. This clones the disk as-is:

dd if=/dev/nvme0n1 of=/dev/target conv=sync status=progress

It's unclear what you want to achieve though. You may have trouble if your OS (and I'm assuming you are cloning a disk containing an OS as you mentioned boot partitions) you are cloning detects the disk differently (Windows HAL or Linux' fstab entries).

edit

As you mentioned Ubuntu, check that your /etc/fstab and your boot-loader use UUIDs to mount your filesystems. In that case, it should just work (tm).

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  • Yes, that's what I'm trying. I have a new hard drive for my laptop and I want to clone the old one with Ubuntu on it to the new one. But I think I just realized my error from your example, I tried to use 'if=/dev/nvme0n1p' io 'if=/dev/nvme0n1'. Which of course makes more sense. I'll try it out. – dazz Feb 14 at 13:03

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