A Qnap NAS has a drive with some bad sectors, I want to RMA it, but before just want to figure out how to prepare a drive? It’s part of a raid 5 setup of 4 drives unencrypted. So I want to remove it and wipe it. Got a Linux machine I can use, but never done this before.
What are common Linux tools to do that sensibly?
Always use /dev/urandom for this purposes. /dev/random will be locked if it doesn’t have enough entropy. It is good for getting some random kilobytes for cryptography but not 2 TB of random data for disk wipe.
Thanks for the heads up!