Need to clone 16GB partition on 128GB disk to 32GB disk
I'm not coming up with a lot of useful (clear) results when searching for a solution to this issue.
Is it OK to simply dd the 128GB disk to the 32GB disk using count to stop after the 16GB partition was cloned?
A bit more context: I had to clone a 16GB eMMC and only had a 128GB SD around. Now I purchased a 32GB eMMC and want to clone it again. The partition holds a root filesystem for an ARMv8 device. I don't have the 16GB eMMC anymore, that would have been the easy way out.
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It's not an active partition/disk I want to clone. Clonezilla seems like something I need to boot into?
You can run clonezilla on your shell session, just apt install conezilla (or whatever variant you're using) and it can do the trick. Dd will almost surely work too, but that leaves a ton of responsibility to you instead of making any sanity checks on the way. That makes dd very powerful tool and it has saved my ass a multiple times, but if you already have a working partitioning schema clonezilla has a ton of options to make your life a lot simpler and a likely a bit faster than dd.
Use a clonezilla boot usb. I did exactly what you're trying with clonezilla: 16gb partition on a 128gb ssd to a 64gb ssd. The clone disk is in a production machine rn and has been for two months.
Yes, Clonezilla runs off a live USB. If it is large enough it can also store the partition you want to clone, making the whole process a lot simpler.