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Is it safe to replace dd?


From: microsoft gaofei
Subject: Is it safe to replace dd?
Date: Mon, 20 Jan 2020 12:14:48 +0000

Many people suggest using dd to create bootable USB, 
https://www.archlinux.org/download/ . But cp and mv also writes to USB, e.g., 
cp archlinux-2020.01.01-x86_64.iso /dev/sdb, cat 
archlinux-2020.01.01-x86_64.iso > /dev/sdb. Is it safe to use these commands 
instead of dd? If it's unsafe, I want to know the reason.

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