Idk that really 🤔
Do you know what /dev/nvme0n1 is?
It's a device file
So there is a chance that / is in that device making it an issue
All I know is that / is a directory having no parent, how can it be inside of a device? 🤔
Your understanding of Linux filesystem is low. Better find someone and learn from that person in your own language
I think it's in /dev/nvme0n1p2
You think or you know? Don't guess
Because dirs need to be physically on a device, right?
So thats how the root dir is in a device ¯\_(ツ)_/¯
You see, p1 and p2 is partition. And nvme0n1 is the disk. Your /home is inside partition 2, but your command is making a dd to whole disk but putting it back to /home in partition 2. What do you think will happen?
Sounds like recursion
Brilliant! So how you should dd the device/disk then?
From /home/manu/dummy.img to /dev/nvme0n1?
So overwritting your whole disk?
To some other file under the same directory?
Between files under current working directory?
The issue is the source
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